All water of the hydrosphere participates in the hydrologic cycle, a complex circulation of water between the ocean, atmosphere, and land . 水圈内所有水都参与水的循环，即海洋、大气层和陆地之间的综合循环。
The half-caste engineer begged and pleaded to stop the engine for half an hour in order to cool it and attend to the water circulation . 混血轮机手再三要求，让机器停下半个小时，等稍微冷却以后，检修一下水循环系统。
Rifled or other pipe wall corrugation may change the flow from a hetero－generous to a homogeneous regime by introducing a secondary circulation . 在有来复线的或其它的管壁皱纹的管中，由于引起副流，可能将非均质流转变为均质流。
The circulation of solids between two fluidized beds makes it possible to transport the vast quantities of heat produced or needed in large reactors . 固体颗粒在两个流化床层之间循环，使得大型反应器中产生的或需供给的大量热量有传递的可能。
The system of blood vessels that carries all blood received from the intestines through the liver before passing it to the general circulation is called the hepatic portal system . 携带从肠收集来的全部血液入肝（即全身循环）之前的血管系统称做肝门脉系。
Several problems in agricultural product circulation 农产品流通应注意的十个问题
These ideas have been in circulation for some time 这些想法已经流行了一段时间。
Research on circulation in academic library 论数字环境下的高校图书馆流通部工作
Guizhou develops the circulation economy tentative plan 贵州发展循环经济的设想
Monitor the casualty s breathing circulation 监察伤病者的呼吸和血液循环状况。
