这种坚固的钢柱安装，这是黑油漆成品，接受一个M 20螺纹扬声器极。

This rugged steel pole mount, which is finished in black paint, accepts a M20 threaded speaker pole.

youdao

从工程学角度考虑，涡轮必须安装在垂直的柱上，即便在有坡度的地形也不例外。

For engineering reasons turbines must be mounted on vertical poles, regardless of the slope of the landscape.

youdao

每转向柱是不同的。因此，在安装型转向每个孔干不同，所以我离开他们出图纸。

Every steering stem is different. Consequently, the mounting holes for each type of steering stem differ, so I left them out of the drawing.

youdao