Below, a photo of a woman recycling a piece of imported American scrap metal inside of an industrial-scale motor scrap recycling (and copper smelting) operation south of Shanghai.

下面是一个妇女的照片，她正在一家上海南部的工业汽车废物回收(和金属熔化)厂回收一件美国进口的废金属。

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The theory and technics of recovering metal zinc from the hot galvanizing scrap by vacuum distillation are discussed. The calculation and industrial experiment show the feasibility of this method.

本文对热镀锌渣真空蒸馏回收金属锌的原理和工艺进行探讨，理论计算和工业试验均证实该法的可行性。

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