Now our local hot pre - coating devices have some defects and must be improved.

国内现有的热法覆膜装置都还存在一些不足，有待进一步完善和提高。

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But DLC films have some defects and can not be sufficient for special needs in industries.

但是DLC薄膜也存在某些缺陷，尚无法满足工业上的一些特殊要求。

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Results The four working modes adapt to the conditions of the time, but they all have some defects.

结果四种工作模式基本适应当时的实际情况，但也都有其不足之处。

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Other rare birth defects have been suggested as a possible risk in some studies, but not others.

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