1.
AC gas metal-arc welding process
交流熔化极气保护焊
2.
metal-arc gas-shielded welding
气保护金属极电弧焊
3.
shielded inert gas metal arc welding
惰性气保护金属弧焊法
4.
Nitrogen protection: Apply nitrogen to detect the oxygen amount contained in the machine online ensuring the safe operation.
氮气保护系统：采用氮气保护以保证机器在安全的环境下运行。
5.
Argument on mixture of hydrogen and nitrogen to replace hydrogen as prote ctive gas;
用氢氮混合气替代氢气保护气体的论证
6.
gas (proof) curtain
气帘，气幕(保护)
7.
Weatherproof or explosion proof electric actuator.
电动执行机构的气候保护或防爆保护。
8.
vacuum and inert atmosphere rolling
真空和保护气体中轧制
9.
inert gas tungsten arc welding
钨板惰性气体保护焊
10.
tungsten inert gas welding
钨极惰性气体保护焊
11.
Let's take care of the air.
让我们好好保护空气吧。
12.
Air Division [Environmental Protection Department]
空气质素科〔环境保护署〕
13.
air-gap asymmetry protectio
气隙不对称保护装置
14.
electric service
电气设备维护和保养
15.
TIG spot welding
钨极惰性气体保护点焊
16.
gas tungsten arc welding
钨电极惰性气体保护焊
17.
Action Plan for the Protection of the Atmosphere
保护大气层行动计划
18.
CO2 gas shield welding
二氧化碳气体保护焊