求翻译：工作活塞使汽缸内气体封闭，并在气体的推动下对外做功。位移活塞是非封闭的占位活塞，其作用是在循环过程中使气体在高温区与低温区间不断交换，气体可通过位移活塞与位移汽缸间的间隙流动。工作活塞与位移活塞的运动是不同步的，当某一活塞处于位置极值时，它本身的速度最小，而另一个活塞的速度最大是什么意思？

Work within the gas piston to the cylinder closed, and driven in the gas doing work outside. Piston displacement piston occupying a non-closed, and its role in the circulation process, to the gas temperature in the high temperature range with a continuous exchange of gas through the displacement of

The piston to cylinder gas closed, and the impetus of the gases in external exergy. Piston displacement of the piston, non-closure of its role in the recycling process for the gas at high temperature and low temperature range area, gas through continuous exchange with displacement cylinder piston di

The work piston causes in the cylinder the gas seal, and under gas impetus foreign acting.The displacement piston right and wrong seal occupies the position of piston, its function is causes the gas in the cyclic process exchanges unceasingly at the high temperature area and the low temperature sect

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The job piston makes the cylinder inner gas close, and do work under the push of the gas to the outside. The displacement piston is the non- close taking the location piston, its function is to make the gas exchange with the low-temperature block constantly in the high-temperature region in the cour