1.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制备方法,了它在耐火材料中应用。
2.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一般原则。
3.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.