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2020-1-6 · A sacrificial anode is a piece of less noble metal, for example , aluminum, and magncsiutm which galvanically corrode and so protect the from comosion. While falliig and striking bottom plating, magnesium anodes and aluminum anodes may provide sparks to cause explosion in cargo tanks [2.7].
The most significant feature of its manufacture was the preparation of the silicon crystals. These were obtained from melts made of highly purified silicon powder to which was added a fraction of a per cent of aluminum and beryllium. The crystal surface was then .
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2019-1-18 · 4000 common vocabulary in English by antoyoshin 4000 từ vựng cần thiết - Cô Mai Phương A abandon [abaendan] V. từ bỏ, bỏ rơi To abandon something is to leave it forever or for a long time.-» The old room had been abandoned years before.
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Chemicals and chemical intermediates for use in the industrial arts, namely naphthenic acids, alpha olefins and catalysts used in the manufacture of detergents, surfactants, engine lubricants and base oils; polymers, resins, solvents, surfactants, engine corrosion inhibitors, chemical preparations used to prevent the freezing of moisture in ...
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