A typical signal was found in the positionofwelding scar of a liquefied petroleum gas (LPG) tank by metal magnetic memory testing (MMMT).
采用磁记忆检测发现液化石油气储罐焊疤部位存在较强的磁记忆信号。
2
All of the stations on the barge-welding, inspection, coating-remain in the same position on the barge.
在铺管船上的各种站—焊接、检查、覆盖层站等—在铺管船上处于相同的位置。
3
The constructing technique of the160? Meter diameter welding ball junction double-deck net shell steel structure roofing of which is in the leading position in China.