helium shielded-arc welding是什么意思
中文翻译氦气保护焊
网络释义
1)helium shielded-arc welding,氦气保护焊2)helium shielded welding,氦气保护焊接3)helium,氦气4)Helium, high purity,氦气5)atomic helium,氦气6)helium gas,氦气用法例句
The preliminary study of small centrifugal compressor compressing helium in a closed cycle;
小型离心式压气机压缩氦气闭式循环的初步研究
Design and study of a reciprocating helium compressor;
大功率活塞式氦气压缩机的研制
Solid Lubrication Technology of HTG R under Helium;
高温气冷堆氦气气氛下的固体润滑技术
