蒸汽机使热转变为能。

A steam engine transforms heat into energy.

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利用焊接时的加热使水汽化，不仅使焊道而且使热影响区的冷却速度减慢。

Using the heat of welding to vapour water, cooling rates are lowered on the weld bead and heat -affected zone.

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热滞止效应使热区在电流零后可维持较长时间，从而造成了对介质恢复过程的影响。

The effect of time lag causes the TBR to last out a long period after current zero, thus influencing the process of dielectric recovery.

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