JB/T 13831.1-2020
Linear rolling guide pair dampers - Part 1: Terms and symbols 滚动直线导轨副阻尼器 第1部分:术语和符号 |
NB/T 20039.2-2014
Code on nuclear air and gas treatment. Ventilation, air conditioning and air cleaning. Part 2: dampers 核空气和气体处理规范 通风、空调与空气净化 第2部分:风阀 |
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