包含 drop-pipe 的英语例句 | 欧路词典例句词典

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The influencing factors of coal arch camber in planomural coal bin and coal drop pipe with rectangular or circular cross section during coal drop are studied theoretically.

对程中平壁仓及截面形状分为矩形、圆形的管起拱的素进行理论研究。

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3G, 401(K), a,

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原声例句

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The ghoul in the attic howled and dropped pipes whenever he felt things were getting too quiet, and small explosions from Fred and George’s bedroom were considered perfectlynormal.

阁楼上的食要得安静了，就高声嚎叫，咣啷咣啷地敲管子。