A thrust hydraulic system of shield tunnelling machine with pressure and flow compound control was designed, and hydraulic cylinders were also controlled in groups.
设计了一种基于压力流量复合控制的盾构推进液压系统，对液压缸进行了分组控制。
The top pressure of HP column was controlled by adjusting the feed flow rate to LP, FLP.
在这个控制方案中，HP塔的塔顶压力的控制通过调节LP塔进料量来实现。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
It is found that the gas flow is mainly controlled by instantaneous arc power and the maximum of gas flow appears not at peak pressure, but at current zero.
结果显示，气流的改变主要受电弧瞬时功率控制，最大流量不是发生于压力峰值时刻而是出现在电流过零时。
Constant flow means a smooth supply free from the pressure fluctuations that plague conventional pressure controlled pumps.
常流是指从压力平稳免费供应波动，常规压力控制水泵。
A new principle is adopted in designing low pressure MOCVD equipment. The principle is that the pressure is set and controlled separately in outlet and inlet of gas line of mass flow controller.
采用了一种新的设计原理，即以流量计为基准，将气体入口端和出口端压力双重分别统一控制，进行了低压MOCVD设计。
Outlet pressure and flow are normally controlled by adjusting valve clearance and it causes considerable energy waste. Frequency control of motor speed is a method of solving the problem.
常规的通过调节阀门开启度来达到调节注水泵出口压力和流量的作法，会使很大一部分能量造成浪费，要解决这个问题，可以采取对注水泵进行调速的方法。
The test results have proved that the flow rate widely varied and the pump efficiency is high when the pump outlet line structure was altered and the outlet pressure was controlled in a special limit.
试验结果表明，改变泵出口管线结构，使泵出口压力在一定范围内工作时，流量变化大，而且泵效率较高，可以作为泵调整参数的一种手段；
It can collect the pressure and the flow by da (data acquisition) system during testing, also can sample and analysis the grain size of the flow after controlled sand.
使用数据采集系统实时采集试验过程中的压力、流量数据，同时对筛管防砂后的流体采样，并进行粒度分析。
The diameter and the number density of microbubbles are controlled by changing the difference in pressure inside and outside of tube and the velocity of liqulid cross-flow outside of tube.
微气泡的大小和数量通过改变管内外的压差和管外剪切流速度来控制。
The diameter and the number density of microbubbles are controlled by changing the difference in pressure inside and outside of tube and the velocity of liqulid cross-flow outside of tube.
微气泡的大小和数量通过改变管内外的压差和管外剪切流速度来控制。
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