positive circulation

Entire circulation is a kind of clearing slags which combines and mixs positive circulation and negative circulation.

"全循环法"实质是将正循环和反循环有机结合、混合使用的一种清渣方法。

The purpose of this paper is to define the definition of the positive cycle development, to build up a systematic and scientific evaluation indicators system to measure if an enterprise is in a positive cycle development.

本文以企业的循环发展作为研究对象，在明确企业正循环发展的定义的基础之上，建立起一套系统的，科学的评价指标体系来判定企业是否处在正循环发展中，并将中国移动和中国联通作为一个典型案例来进行实证分析。

The application of normal-circulation rotator in reveres circulation drilling in sandy gravel stratum;

正循环回转钻机在砂砾层的反循环应用

The measures to control construction quality are analyzed,which are used to drill deep holes with normal circulation slewing drilling machine.

分析了正循环回转钻深孔施工的施工方法和要点,提出了施工监理的监理质量控制点及注意事项。