But because of the complex technology of them, once the malfunction happens difficult maintenance has seriously affected the effective use of the nc machine tools.
但由于数控机床技术复杂，一旦出现故障，维修难的问题严重影响了数控机床的有效利用。
But because of the complex technology of them, once the malfunction happens difficult maintenance has seriously affected the effective use of the nc machine tools.
但由于数控机床技术复杂，一旦出现故障，维修难的问题严重影响了数控机床的有效利用。
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