钢材的矫正，因手工矫正生产效率低，劳动强度大，要求操作工人技术水平高，因此，只有在没有（）或无法应用机械设备时才采用。_初级电焊工考试_全学科试题题库

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钢材的矫正，因手工矫正生产效率低，劳动强度大，要求操作工人技术水平高，因此，只有在没有（）或无法应用机械设备时才采用。
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