This peper introduces the new method about variable pressure and variable current control of water pump in the process of cities water supply.

提供了城市供水水泵的变压变流量自动控制方法，成功地解决了水源地和地区加压站昼夜之间水流量和水压变化大、难以控制的问题。

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The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.

在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。

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These controls compare the current value of the control with its previous value, which is stored implicitly in view state if any process has subscribed to the change event.

这些控件比较其当前值与以前值，如果有任何过程预订更改事件，以前值隐式存储在ViewState中。

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Current efforts in malaria control are mainly based on the use of insecticide sprays and treated bed nets.

VOA: special.2009.12.22

The British Health Secretary Alan Milburn said the current system of control through licences needed to be strengthened by law "to ensure that genetic advances are used for good rather than for evil".

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He said the current sharing of a control room had proved the two services can work together.

BBC: Cambridgeshire and Suffolk fire service merger on hold

It is incredibly clear that the current policy of TB control is an abject failure, so carrying on as we are is doomed to increase the size of any effective future badger cull.

BBC: Viewpoints: The badger cull