Solar panels speed pumping on sunny days and slow it on cloudy days, so crops always get the water they need.
太阳能电池板在晴天里为抽水加速,阴天则减速,保证作物们总能获得需要的水量。
It also minimises the pumping losses caused by no longer having to "throttle" (ie, strangle) the air flowing into the cylinders in order to control the engine speed.
这样还把由于不必再为了控制引擎转速来抑制空气流入引起的抽吸效应的能耗最小化。
Low ultimate pressure, high pumping speed for Ar.
极限压力低、抽气压力范围宽,对氩气抽速较高。
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