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SJ/Z 9008.2-1987微波电子管电性能的测试第2部分：一般测试Measurement of electrical properties of microwave tube...2022-06-13

GB 16787-199730MHz--1GHz 声音和电视信号的电缆分配系统辐射测量方法和限值Measurements and limits of radiation...2022-06-12

GB/T 20018-2005金属与非金属覆盖层覆盖层厚度测量 β射线背散射法Metallic and non-metallic coatings—Measurem...2022-06-09

GB/T 19889.5-2006声学.建筑和建筑构件隔声测量.第5部分:外墙构件和外墙空气声隔声的现场测量Acoustics―Measuremen...2022-06-09

GB/T 18311.4-2003纤维光学互连器件和无源器件基本试验和测量程序第3-4部分;检查和测量-衰减Fibre optic interco...2022-06-08

SJ/T 10870-1996盘封管电性能测试方法调幅调相转换系数的测试方法Measurements of electrical properties of disk-...2022-06-06

SJ/Z 9010.16-1987电子管电性能的测试第16部分：电视显像管测试方法Measurements of electrical properties of elect...2022-06-06

GB/T 18451.2-2021风力发电机组功率特性测试Wind turbines. Power performance measurements of electricity produ...2022-03-18

GB/T 40299-2021金属和合金的腐蚀腐蚀试验电化学测量方法适用惯例Corrosion of metals and alloys. Conventions ap...2022-03-18

ASTM D7490-2013用接触角测量法测量固体涂料、衬底和颜料表面张力的试验方法Standard Test Method for Measurement ...2022-03-14

ASTM D5388-1993(2013)用回水步推法间接测量流水的试验方法Standard Test Method for Indirect Measurements of Dis...2022-03-14

ASTM D5906-2002(2013)地表水深度测量期间水平位置测量指南Standard Guide for Measuring Horizontal Positioning D...2022-03-14

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