... crack a criminal case破案 crack a difficult problem解难题 crack the whip突然采取严厉的措施 ...
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It is a big difficult problem to repair the crack of gear box if wheel motor in wheel motor repairing. This paper makes a systematic statement for the reason and way out of the problem.
轮马达齿轮箱裂纹修复是轮马达修理中的一大难题，长期未能解决。本文系统阐述其产生的原因以及解决办法，对创建无泄漏和现场达标有重要意义。
It is a big difficult problem to repair the crack of gear box if wheel motor in wheel motor repairing.
轮马达齿轮箱裂纹修复是轮马达修理中的一大难题，长期未能解决。
The crack of concrete slab is a difficult problem in the design and construction.
混凝土面板裂缝一直是面板设计与施工中的一个难题。
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