无焊缝的无缝的
Seamless without welds
以上为机器翻译结果，长、整句建议使用 人工翻译 。
无缝管线管主要是用于油井或气井的井口附近输送高压油、气的无焊缝钢管。
Seamless steel line pipe is a kind of steel pipe without seams, which is mainly used in the places near the mouth of oil well or gas well to transmit oil or gas with high pressure.
youdao
应用推荐
模块上移
模块下移
不移动