erformance
ressure drops
roperties;Resistance;Return current;Safety;Specification (approval);Structural systems;Testing;Tolerances (measurement);Transmission protocol;Ultrasonic devices;Ultrasonics;Volume measurement【摘要】: 【中国标准分类号】: N12【国际标准分类号】: 91_140_40【页数】: 84P.;A4【正文语种】: 英语 
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