submicron airborne particle
亚微米空传微粒
Airborne particle count test.
空气粒子数测试。
Standard Practice for Secondary Calibration of Airborne Particle Counter Using Comparison Procedures
用比较程序进行空中游离微粒计数器的二次校正
Workplace atmospheres Assessment of performance of instruments for measurement of airborne particle concentrations.
工作场所空气。气载粒子浓度测量用仪器的性能评定
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