大家都搜：
管道数量
1、crookes tubes───克鲁克斯放电管
2、number of copies───n.复制份数
3、number of───许多；数目；若干
4、endotracheal tubes───气管内套管（endotrachealtube的复数形式）
5、disposing of fluorescent tubes───荧光灯管的处理
6、convolute tubes───回旋管
7、tympan tubes───鼓管
8、tubes───n.[材]管子，导管；管状虫；伦敦地铁（tube的复数）
9、the tubes───管；伦敦地铁（非正式）
1、Silk tubes, made by dipping a wax mold in aqueous silk solution, have a number of tissue engineering applications like blood vessel grafts and nerve guides.───丝管是通过将蜡模浸入水化的丝蛋白溶液中制成的，有许多组织工程应用，如血管移植和神经导引。
2、A much larger number of tubes were re shipped from the free zone to other Latin American countries.───更大的一批牙膏在那里被换轮装载，并运向其它拉丁美洲国家。
3、Exceedingly high production rates can be achieved with tubular reactors either by increasing the diameter of the tube or more commonly by using a sufficient number of tubes in parallel.───管式反应器能够获得非常高的产率，要么增加管的直径要么通过使用充足数量的并列管提高更大的通用性。
4、large number of tubes were employed to represent this quality and turned the interior space into a secret place in the woods.───大量的管子来表现这个特性，将室内空间变成树林中的秘密场所。