... 螺栓连接阀盖 BB bolted bonnet ; BC bolted cover 冲洗连接阀purge connection valve 对焊连接阀 Buttwelding valves ; Buttwelding ales ...
双语例句
1
The low pressure header and each branch shall have a 6 mm minimum, non ferrous shut off valve for each instrument requiring an air supply and a compression coupling for each air purgeconnection.