多余(needlessness), 此释义来源于网络辞典。
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... 不测 = mishap 不消 = needlessness 不消化 = undigested ...
This technique requires less treatment on the surface of the tube and needlessness of heat treatment to the tube, in addition, there is no need of large machines.
其工艺主要特点：降低了钢管表面处理要求、无需对钢管进行加热处理、无需大型机具。
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