Their method exploits the fact that water vapour changes the speed at which radar waves travel though air.
他们的方法揭示出了这样一个事实：水蒸气会改变雷达波穿越空气时的速度。
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Vapour epitaxial grown single-crystal diamond film on diamond surface was obtained by microwave reinforced chemical vapour deposition method, using hydrogen, aceton vapour as source of gas.
In the present paper, the relation between diamond nucleation density and synthesis conditions is studied for the diamond thin film synthesized by hot filament chemical vapour deposition method.