roughellong forge 粗锻

roughellong tool 粗车刀

roughellong planing tool 粗刨刀

band roughellong mill 带材粗轧机

Roughellong in 排污口中间离墙

Roughellong line 粗真空管道

Roughellong pump 低抽气机

Taper roughellong 具有刀顶距紧缩的大小轮粗切过程

stone roughellong 砂轮儿式打粗

roughellong roller 糙面滚筒