大口径金属管道把钟形导向短节与泥浆储罐连接起来。

The large-diameter metal pipe connects the bell nipple to the possum belly.

youdao

大口径金属管道把钟形导向短节与泥浆储罐连接起来。

The large-diameter metal pipe connects the bell nipple to the possum belly.

youdao