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800MHz/2GHz cdma2000数字蜂窝移动通信系统检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了坐标格网尺的产品分类、技术要求、试验方法和检验规则。t本标准适用于坐标格网尺。t坐标格网尺〔俗称方眼尺)是主要用于展绘和量测地图坐标网、图廓点及控制点的专用直尺。
本标准规定了三等标准金属线纹尺的产品规格、技术要求、试验方法和检验规则。t本标准适用于长度为1m的双面刻划的三等标准金属线纹尺。t三等标准金属线纹尺是我国线纹量值传递系统规定的线纹标准量具之一,主要用于检定钢直尺、四等水准标尺等,也可作为长度量测的量具使用。
本标准规定了公路用钢网复合型玻璃纤维增强塑料管箱(以下简称钢网玻璃钢管箱)的产品分类、结构尺寸及偏差、技术要求、试验方法、检验规则、标志、包装、运输和储存等内容。 本标准适用于公路用钢网玻璃钢管箱。
本标准规定了安全生产检测检验机构进行安全生产检测检验能力的通用要求。本标准适用于所有安全生产检测检验机构。本标准用于安全生产检测检验机构建立检测检验管理体系,是确认安全生产检测检验机构能力的依据。
本标准规定了城市轨道交通试运营前安全评价的程序、内容、方法等基本要求,以及城市轨道交通试运营前安全评价报告的编制格式。本标准适用于国内城市轨道交通试运营前安全评价工作。
本标准规定了测定环境空气颗粒物中水溶性无机阳离子(Li<上标+>、Na<上标+>、NH<下标4><上标+>、K<上标+>、Ca<上标2+>、Mg<上标2+>)的离子色谱法。本标准适用于环境空气颗粒物(包括TSP、PM<下标10>、PM<下标2.5>、降尘等)中6种水溶性阳离子(Li<上标+>、Na<上标+>、NH<下标4><上标+>、K<上标+>、Ca<上标2+>、Mg<上标2+>)的测定。环境空气颗粒物滤膜样品,当采样体积(标准状态)为60 m<上标3>,提取液体积为100 ml,进样体积为25 μl时,本方法的检出限为0.005~0.037 μg/m<上标3>,测定下限为0.020~0.148 μg/m<上标3>;降尘样品,当取样量为0.100 g,提取液体积为100 ml,进样体积为25 μl时,本方法的检出限为0.003~0.022 mg/g,测定下限为0.012~0.088 mg/g。详见附录A。
本标准规定了各种缝纫型式的分类、图示和标示。虽然没有包含所有的方面,但解释了许多常用的缝纫类型。 本标准适用于服装工业的常用缝纫型式,所有的图示只表示了缝料布局的截面构造。 本标准应与ISO 4915配合使用。
FZ/T 80011的本部分适用于不同服装CAD之间,以及CAD/CAPP系统之间进行二维版样数据的交换,今后制定的三维数据交换标准需与此标准相兼容。本部分定义的版样数据类型遵照产品数据表达和交换标准STEP,建议将STEP映射到XML(可扩展的标记语言),使用XML文件格式进行版样数据文件交换。
This Recommendation provides protection requirements for ground-based receivers of the radiolocationservice with respect to MSS feeder links (Earth-to-space) that may operate in the band 1 390-1 392 MHz aswell as protection requirements for the fixed and the aeronautical mobile service with respect to MSS feederlinks (space-to-Earth) that may operate in the band 1 430-1 432 MHz.
La présente Recommandation indique les besoins à satisfaire pour protéger les récepteurs au sol du service de radiolocalisation vis-à-vis des liaisons de connexion du service mobile par satellite (SMS) (Terre vers espace) pouvant fonctionner dans la bande 1 390-1 392 MHz ainsi que les besoins en matière de protection du service fixe et du service mobile aéronautique vis-à-vis des liaisons de connexion du SMS (espace vers Terre) pouvant fonctionner dans la bande 1 430-1 432 MHz.
La presente Recomendación establece los requisitos de protección para los receptores basados en tierra del servicio de radiolocalización con relación a los enlacesde conexión del servicio móvil por satélite (SMS) (Tierra-espacio) que pueden funcionar en la banda 1 390-1 392 MHz, así como los requisitos de protección para el servicio fijo y móvil aeronáutico con respecto a los enlaces de conexión del SMS (Tierra-espacio) que pueden funcionar en la banda 1 430-1 432 MHz.
1.1 This practice covers procedures and definitions for estimating ferrite content in certain grades of austenitic iron-chromium-nickel alloy castings that have compositions balanced to create the formation of ferrite as a second phase in amounts controlled to be within specified limits. Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means. 1.2 The grades covered by this practice are: CF-3, CF-3A, CF-8, CF-8A, CF-3M, CF-3MA, CF-8M, CF-8C, CG-8M, and CH-10. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the practice. This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
4.1x00a0;The tensile and impact properties, the weldability, and the corrosion resistance of iron-chromium-nickel alloy castings may be influenced beneficially or detrimentally by the ratio of the amount of ferrite to the amount of austenite in the microstructure. The ferrite content may be limited by purchase order requirements or by the design construction codes governing the equipment in which the castings will be used. The quantity of ferrite in the structure is fundamentally a function of the chemical composition of the alloy and its thermal history. Because of segregation, the chemical composition, and, therefore, the ferrite content, may differ from point to point on a casting. Determination of the ferrite content by any of the procedures described in the following practice is subject to varying degrees of imprecision which must be recognized in setting realistic limits on the range of ferrite content specified. Sources of error include the following: 4.1.1x00a0;In Determinations from Chemical Compositionx2014;Deviations from the actual quantity of each element present in an alloy because of chemical analysis variance, although possibly minor in each case, can result in substantial difference in the ratio of total ferrite-promoting to total austenite-promoting elements. Therefore, the precision of the ferrite content estimated from chemical composition depends on the accuracy of the chemical analysis procedure. 4.1.2x00a0;In Determinations from Magnetic Responsex2014;Phases other than ferrite and austenite may be formed at certain temperatures and persist at room temperature. These may so alter the magnetic response of the alloy that the indicated ferrite content is quite different from that of the same chemical composition that has undergone different thermal treatment. Also, because the magnets or probes of the various measuring instruments are small, different degrees of surface roughness or surface curvature will vary the magnetic linkage with the material being measured. 4.1.3x00a0;In Determinations from Metallographic Examinationx2014;Metallographic point count estimates of ferrite percentage may vary with the etching technique used for identification of the ferrite phase and with the number of grid points chosen for the examination, as explained in Test Method E562. 4.2x00a0;The estimation of ferrite percent by chemical composition offers the most useful and most common method of ferrite control during melting of the metal. 4.3x00a0;For most accurate estimate of ferrite percent, a quantitative metallographic method should be used. 1.1x00a0;This practice covers procedures and definitions for estimating ferrite content in certain grades of austenitic iron-chromium-nickel alloy castings that have compositions balanced to create the formation of ferrite as a second phase in amounts controlled to be within specified limits. Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means. 1.2x00a0;The grades covered by this practice are: CF-3, CF-3A, CF-8, CF-8A, CF-3M, CF-3MA, CF-8M, CF-8C, CG-8M, and CH-10. 1.3x00a0;The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconf......
1.1 This specification covers 8000 series aluminum alloys fabricated into round wires in annealed or intermediate tempers suitable for stranding into conductors or for solid single conductors, usually to be insulated.1.2 The values stated in inch-pound or SI units are to be regarded separately as the standard. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as the standard.Note 1Aluminum alloys capable of meeting the requirements of this specification are listed in .Note 2The alloy and temper designations conform to ANSI H35.1. Unified Numbering System alloy designations are listed in in accordance with Practice E 527.Note 3Certain aluminum alloys may be subject to patent rights. U.S. patents numbers are shown in .This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.1 This specification covers 8000 series aluminum alloys fabricated into round wires in annealed or intermediate tempers suitable for stranding into conductors or for solid single conductors, usually to be insulated. 1.2 The SI values for resistivity are regarded as standard. For all other properties, the inch-pound units are regarded as standard and the SI units may be approximate. Note 18212;Aluminum alloys capable of meeting the requirements of this specification are listed in Table 1. Note 28212;The alloy and temper designations conform to ANSI H35.1. Unified Numbering System alloy designations are listed in Table 1 in accordance with Practice E527. Note 38212;Certain aluminum alloys may be subject to patent rights. U.S. patents numbers are shown in Table 1. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. TABLE 1 Aluminum Alloys Alloy DesignationU.S. Patent Number ANSI-H35.1 UNS 8017A98017... 8030A98030 3711339 8076 A98076 3697260 8130 A98130 ... 8176 A98176 RE 28419 RE 30465 8177A98177 ...
1.1x00a0;This specification covers 8000 series aluminum alloys fabricated into round wires in annealed or intermediate tempers suitable for stranding into conductors or for solid single conductors, usually to be insulated. 1.2x00a0;The SI values for resistivity are regarded as standard. For all other properties, the inch-pound units are regarded as standard and the SI units may be approximate. Note 1:x00a0;Aluminum alloys capable of meeting the requirements of this specification are listed in Table 1. Note 2:x00a0;The alloy and temper designations conform to ANSI H35.1. Unified Numbering System alloy designations are listed in Table 1 in accordance with Practice E527. Note 3:x00a0;Certain aluminum alloys may be subject to patent rights. U.S. patents numbers are shown in Table 1. 1.3x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ISO 80000-8 gives names, symbols and definitions for quantities and units of acoustics. Where appropriate,conversion factors are also given.