positive pressure meaning in Chinese

【机械工程】正压力。

Exploration of positive pressure mechanical air supply system
正压送风系统设计探讨
Self - contained positive pressure compressed oxygen respirator
隔绝式正压氧气呼吸器
Test method for positive pressure fire test of window assemblies
窗组件正压燃烧试验方法
Positive pressure fire tests of door assemblies
门组件的正压力燃烧试验
Method of tests for fire door assemblies under positive pressure
正压力下防火门组件测试方法

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