non-abrasive rock 中文意思是什麼
non-abrasive rock
解釋
非磨蝕性巖石-
Comparing with non - rotating abrasive jet, the hole diameter and the volume of rock - breaking are many times larger than the former by use of rotary abrasive jet on the same condition
與非旋轉磨料射流相比,同樣條件下旋轉磨料射流鉆孔直徑和破巖體積都比前者高出多倍。
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