求翻译：导致刀座开裂的原因也可能是:在合铜与刀座进行装备后,刀座孔内与合铜间含有未清除的杂质,导致合同与刀座配合过紧, 以至于导致刀座开裂.是什么意思？

Reasons leading to the knife block cracking may also be: equipment of copper and tool holder, knife block hole and copper containing impurities that are not clear, leading to the contract with the tool holder with tight, that lead to knife blocks cracking.

In the bead seat could also be caused by: in the copper and the knife is a knife, and equipped with a rear hole in between the copper containing no clear of impurities and results in the contract and the knife with the tight, so that lead to cracking of the knife.

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Cause cracking of the knife may also be: copper after equipment with the knife, knife hole with copper containing impurities that are not clear, caused knife combined with tight, cracking that led to a knife.

Causes the tool apron dehiscence the reason also possibly is: After gathers the copper and the tool apron carries on the equipment, in the tool apron hole with gathers between the copper not to include the elimination impurity, causes the contract and the tool apron coordinates excessively tightly,