的;The Preparation method of cheap aluminium dihydric phosphate and its application in refractories have been intro-duced.
提供了廉价磷酸二氢铝的制备方法，
了它在耐火材料中的应用。
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The Preparation method of cheap aluminium dihydric phosphate and its application in refractories have been intro-duced.
提供了廉价磷酸二氢铝的制备方法，了它在耐火材料中的应用。
Oil pump speed regulation technology and the general principle for speed regulator slection are intro-duced.
了油泵调速调节技术和选择油泵调速装置的一般原则。
The process of decoppering through insoluble anode electrolysis in the solution produced by leaching high grade matte nickel using chlorine is intro-duced in this paper.
本文了氯化浸出高冰镍溶液采用不溶阳极电解脱铜的方法。
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