水氡的相对变化量与地震也存在着一定的关系。
There also existed some correlation between the relative variation of water radon and the occurrence of earthquakes.
水氡的相对变化量与地震也存在着一定的关系。
等效焓降法计算汽轮机组效率相对变化量时，需选择变化基准。
In calculating the relative change of efficiency for steam turbines, it is essential to select the right change reference.
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