differential pump 活塞(或柱塞)往复一次，有一次吸液过程和两次排液过程或两次吸液过程和一次排液过程的往复泵。 当柱塞向右移动时，液体自右边的缸排出，而左边的缸则同时吸入液体。 当柱塞向左移动时，液体自左边的缸排至右边的缸内，由于右缸的容积较左缸小，同时有一部分液体排出至管道中。 与单作用泵相比，流量较为均匀。与双作用泵相比，吸排液阀较少。
... differential manometer 差式压力计 differential pump 差动泵 differential scanning calorimetry (DSC) 差示扫描量热法 ...
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差动活塞泵 differentialpistonpump ; differential pisto ump ; [机] differential piston pump
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给出了采用变转速泵控闭式回路控制差动缸的原理，建立了该系统的数学模型，进行了计算机数字仿真研究。
In this paper, the principle of variable speed pump control hydraulic differential cylinder is designed, and the simulation model of system is built, and the simulation research is carried out.
介绍新提出的用变转速液压泵闭环控制的差动缸电液伺服系统。
The electro-hydraulic servo system directly controlled with speed variable pumps is a competitive and environmental beneficial driving principle.
为了补偿差动缸面积差和改变泵的输出流量，提出采用并联型三配流窗口的变量轴向柱塞泵方案。
In order to compensate for the area deviation of differential cylinder and change the output flow of the pump, a program of parallel-type of three-window of variable axial piston pump was proposed.
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