导块;
It is concluded that the new type guide shoe is dominantly advantageous.
结果表明,新型导板具有明显的优势.
We are connecting the guide shoe and the casing shoe.
我们正在接引鞋和套管鞋.
Both the guide shoe and the casing shoe have already been connected.
引鞋和套管鞋都已接好.
First, connect the guide shoe and the casing shoe.
先接好引鞋和套管鞋.
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