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水泥搅拌机检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了有关机器和设备的下列内容: ——噪声发射值的标示; ——技术文件中应提供产品的噪声发射值和与产品有关的声学信息; ——说明了噪声发射值的验证方法。 本标准使用的噪声发射标示值可分为单值噪声发射标示值Ld或双值噪声发射标示值L和KoL是直接测量的噪声发射值,K是与测量有关的不确定度,Ld为L与K之和,由重复测量得到的置信度范围内不可能超过的上限值,Ld对应于GB/T 14573.1中定义的Lc标牌值。 噪声发射值有单值或双值表示形式,可以是单一的A计权声功率级值LWA或指定位置处的A计权发射声压级LpA或C计权峰值发射声压级LpC,peak三者之一表示。也可以使用上述三种量同时表示。一经选定,相关测试规程中K值也就确定。 附录A给出了确定噪声发射标示值的方法。
本标准规定了主要木本植物种子催芽的有关技术要点和方法要点。本标准适用于造林绿化用主要木本植物种子播前的催芽处理。
本标准规定了聚晶金刚石磨耗比的测定原理、标准测试工件、测定装置和测定方法。本标准适用于聚晶金刚石和聚晶金刚石复合片磨耗比的测定。
本标准规定了废镭源整备的基本要求和事实程序。 本标准适用于废镭源的整备。
Le présent document s'applique quelle que soit la taille du chantier à la réalisation :- d'assises de chaussées non traitées ou traitées aux liants hydrauliques ;- d'accotements lorsqu'ils sont considérés comme des assises ;- de couche de forme ou de forme/fondation si et seulement si leurs caractéristiques physiques et mécaniques sont prises en compte dans le dimensionnement de la structure de chaussée (Guide de dimensionnement SETRA-LCPC 1994 et Catalogue des structures des chaussées neuves SETRA 1998).Le présent document s'applique aux assises non traitées ou traitées en centrale ou en place en :- graves, sables et autres matériaux traités aux liants hydrauliques ;- grave non traité ;- béton compacté et grave traitée hautes performance ;- matériaux divers traités en place ;- anciennes chaussées reconditionnée ;- matériaux autocompactant ;y compris leur protection superficielle.
Esta norma tiene por objeto establecer el método para determinar el fraguado rápido de morteros de cemento pórtland.
This part of BS 5385 gives recommendations for the design andinstallation of terrazzo tile and slab and natural stone internal andexternal floorings, and contains recommendations covering the layingof agglomerated stone, a cast manufactured item containing naturalstone that is subsequently sawn to size.The types of bedding methods that can be used and their suitabilityare given; as well as recommendations for the protection, cleaningand maintenance of the finished floor surface.
This document refers to filtering devices designed for protection against carbon monoxide (filter self-rescuer). It specifies minimum requirements for filter self-rescuers. This document does not apply to apparatus for work and rescue or to diving apparatus. Laboratory and practical performance tests are included for the assessment of compliance with the requirements.
This European Standard specifies requirements for cement mortar linings for protecting the internal surface of steeltubes and pipeline components. It also specifies requirements for their application. It is applicable to the linings oftubes that have been welded longitudinally or spirally, seamless tubes and non-alloy steel components used forfluid transportation. This European Standard does not cover in situ applied or rehabilitation linings.This type of lining is used in particular in the transport and distribution, under pressure or by gravity, of waterintended for human consumption and industrial use, and also in fire extinguishing and waste water systems. Thetemperature of the water transported should not exceed 50 °C. Higher working temperature can be used byagreement of the parties.The constituent materials of cement mortar lining, when used under the conditions for which they are designed, inpermanent or temporary contact with water intended for human consumption, shall not change the quality of thatwater to such an extent that it fails to comply with the requirements of European regulations. For this purpose,reference shall be made to the relevant national standards transposing EN standards when available, dealing withthe influence of materials on water quality.