Due to unstable sea level, drilling by using 6bs counter circulation pump is not very suitable.
在浅海岸边进行钻机作业，由于海平面水位不稳定，采用6BS反循环泵已不合适。
Some superiorities of using down hole hammer counter circulation type continuous coring (sampling) method in gold ore exploration are expounded in this paper.
文中阐述了在金矿勘探中应用潜孔锤反循环连续取心（样）的优越性；
For these reasons, a half-close and clockwise or counter-clockwise flow circulation is formed at the north of the bay during tide falling or rising.
因此，涨潮时北半部形成一个半封闭式的逆时针向环流，落潮时则形成半封闭式的顺时针向环流。
The method of design of arbitrary cany counter of unnatural sequence circulation by use of medium - scale counter core is discussed. It finds wide application in the special circulation counter.
探讨利用中规模计数器芯片设计按非自然顺序循环的任意进制计数器方法，该方法在特殊循环计数器设计的应用中，有着广泛的应用。
All teachers and staff can use their computer login name to borrow library materials at the Circulation Counter.
教职员工可使用教师电脑使用者名称借阅图书馆资源。
All teachers and staff can use their computer login name to borrow library materials at the Circulation Counter.
教职员工可使用教师电脑使用者名称借阅图书馆资源。
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