recirculating single pass method 再循环单通道方式
Single pass drilling apparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting.
单通道钻孔装置，整个钻头的使用，用于单通道岩石锚固的方法和岩石锚栓。
Single pass laser surface of the specimens using powder feeding method were obtained by varying the powder feeding rate and the preheating temperature of the substrate.
通过改变送粉激光熔覆过程中的扫描速度、送粉速率、基体预热温度等工艺参数，获得了单道激光熔覆层。
Based on this idea, a new designing method of single pass and continuous rolling pass have been inquired.
用这种思想探讨了单个孔型和连轧孔型的设计方法。
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