oxygen controls meaning in English

氧气设备操纵机构

Oxygen control in steel and oxide metallurgy
钢中氧的控制及氧化物冶金
Oxygen control valves consist of valve , actuator and accessories
氧气调节阀由阀门,气动执行机构及附件组成
Technical specification for nitrogen injection oxygen control fire prevention system
注氮控氧防火系统技术规程
Design , fabrication , inspection and test for the supplied product shall accord fully with the requirements of technical specification for oxygen control valves
所供产品的设计,制造,检验和验收应符合氧气调节阀技术规格书的要求