gas distribution system meaning in English

煤气分配系统
气体分配系统

Metalllurgical analysis for gas distribution system components
气体分配系统元部件的金相分析
Gas shut - offs and valves in gas distribution systems , manually operated thermoplastic
气体分配系统中手动热塑气体截流阀及阀门
Manually operated thermoplastic gas shutoffs and valves in gas distribution systems
气体分配系统中的手动热塑性气体截流阀及阀门
Standard test method for determination of oxygen contribution by gas distribution system components
测定气体分配系统组件供氧的标准试验方法
Standard test method for determination of moisture contribution by gas distribution system components
用气配系统组件时测定湿度作用的测试方法

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