为满足这一目的，可能需要放置一根、二根或者三根浮动接头。
There can be one, two or three joints of casing used for this purpose.
浮箍是放置于浮动接头之上的，而浮鞋则是放置于浮动接头之下，以防止水泥浆回流到套管内。
A float collar is placed at the top of the float joint and a float shoe placed at the bottom to prevent reverse flow of cement back into the casing after placement.
所述浮动称重筒与无轴螺旋机本体的出料口通过软接头连接。
The floating weighing barrel is connected with the material discharging opening of the non-axle spiral conveyor main body through a flexible connector.
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