英语词汇“gravity bar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	gravity bar
释义	gravity bar gravity bar [′grav·əd·ē ‚bär] (mining engineering) A 5-foot (1.5-meter) length of heavy half-round rod forming the link between the wedge-oriented coupling and the drill-rod swivel coupling on an assembled Thompson retrievable borehole-deflecting wedge.
随便看	on the hour on the hour/half-hour on the house on the hush on the hush-hush on the hustings on the in, be on the increase nmhcrx nmhcs nmhdu nm-hdv nmhe nmhea nmhear nmhed nmhf nmhg nmhha nmhhsa nmhi nmhia nmhic nmhid nmhima

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