zinc造句
271 Mineral resources are mainly tungsten ore, lead ore, zinc, and clay mineral - based.
272 The major products of the Dongfeng Chemical Factory are : "Snow Mountains" Brand·barium metaborate , zinc phosphate, and aluminum polyphosphate series.
273 Zinc kiln slag contained some valuable and recoverable metals, such as silver, gold, gallium, germanium, etc.
274 Familiar all product process in zinc alloy manufacture. For example Die - casting grinding , polishing etc.
275 In chapter 3, the hydride generation of nutritional elements of germanium and zinc was investigated.
276 The study deals with the determination of trace arsenic in the grains of zinc and tin by the iodimetry methods.
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