As one of the most stringent components in diesel engine, piston transfers the driving force during its high-speed reciprocating motion and withstands high mechanical load and thermal load.
活塞是柴油机工作条件最苛刻的部件之一，它在高速往复运动中传递着整个柴油机的原动力，承受着极高的机械负荷和热负荷。
When unstable thermal conditions are satisfied with the constituent fluctuations of "correct direction" and "degree", phase transformation driving force is raised and nucleation is promoted.
当成分起伏的“方向性”和“程度”满足形核的热力学条件时，相变驱动力增加，可以促使钢液形核。
The formation of sedimentary basin is mainly related to the thermal and material convection of the earth interior, and that is the primary driving force causing the formation of sedimentary basin.
沉积盆地的形成主要与地球内部的热和物质的对流密切相关，它是沉积盆地形成和演化的原始动力。
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