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1·The results of circulated heating of the deaeration heating systems were com-pared by using steam injector to replace the hot water circulation pump.

将使用蒸汽喷射器替代热水循环泵对除氧加热系统进行循环加热的效果进行了对比，认为应用蒸汽喷射器可以起到节能、安全、高效、方便的作用。

2·Injector steam engine sounds weird.

“蒸汽机”这个词听起来怪怪的。