因此，焊接镀锌板一定要减少热输入量，采用特殊的钎焊材料和性能优良的MIG焊机进行焊接。

So the heat input should be kept low to weld galvanization steel sheet. In this paper the MIG welding machine is adopted with special sold…

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电火花堆焊工艺具有热输入量小、残余应力可忽略不计等显著特点，在特殊关键部件焊接中有不可替代性。

The electric spark build-up welding technology features less heat input and negligible residual stress etc., which is non - replaceable in the welding of special key components.

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随着焊接热输入量的增加，由于熔池搅拌、焊接应力、合金元素烧损等原因，马氏体的分布更加散乱和密集；

By increasing the weld heat input, the distribution of martensite becomes more dispersive and glomerate due to the molten pool stiring, the welding stress and the burning loss of alloy elements.

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So we don't really need to put in a certain amount of heat and change the temperature of the products and the calorimeter and so on.

所以我们实际上并不需要输入,一定的热量，改变生成物,和量热计的温度之类。

麻省理工公开课 - 热力学与动力学课程节选