source of heat中文什么意思

例句与用法

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1. From the above it will be realised that fundamental difference between petrol and diesel engines is that in the petrol engine the source of heat for igniting the charge , namely an electric spark , is generated outside the engine , and is taken , as it were , into the waiting charge at the required instant
   翻译：在高速柴油机发展的早期，可变的正时装置被引用到油泵驱动联轴节上，采用螺旋式花键套管的形状，驱动轴和从动轴之间的相对角度可以通过手动或自动控制进行改变。