英语词汇“Rate of penetration”是什么意思，翻译、用法及简单造句-英汉双解词典-英汉网

单词	Rate of penetration
释义	Rate of penetration 英语百科 Rate of penetration In the drilling industry, the rate of penetration (ROP), is the speed at which a drill bit breaks the rock under it to deepen the borehole. Also known as penetration rate or drill rate. It is normally measured in feet per minute or meters per hour, but sometimes it is expressed in minutes per foot.
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