Questions for Thoughts 1. It is said if you' re tired of London, you're tired of life. Do you think so? Why or why not? 2. What do you think of the weather in great Britain? Do you think that the uncertainty of the weather really has a definite effect upon the Englishmans

对织金新华含稀土磷矿酸解过程动力学及稀土浸出机理进行了研究.结果表明:∑REO转化率动力学曲线与P2O5转化率动力学曲线变化趋势相近,即随着温度和溶液酸度的升高,稀土的转化率提高;∑REO的酸解动力学可用德罗兹多夫方程来很好的描述,拟合曲线的相关系数在0.99以上.根据Arrhenius方程对磷矿酸解过程P2O5的反应表观活化能计算表明,织金新华磷矿酸解的主要反应为固态膜扩散控制过程,而稀土在磷矿中的类质同象存在形态也决定了其反应属于固态膜扩散控制过程.织金新华磷矿酸解过程稀土的浸出机理分析表明,稀土主要以RE2(SO4)3形式存在于溶液中,而磷石膏中的稀土以RE2(SO4)3和硫酸钙晶体包裹的形式存在

重整催化剂是石油炼制工业中不可缺少的步浸出工艺,并对有关反应机理进行了探讨。 催化触媒,国内炼油重整装置较多使用铂铼催化2实验剂,从中回收Pt、Re的工艺研究较多,但工业生2.1实验原料 产中应用的主要为分步浸出法1。从1993年开 实验原料分为两种,一种为进口废催化剂 始,我们开展从废剂中回收Pt、Re的试验研究,(E-601),一种为国产的废催化剂(CB-7),载经过多种工艺选择,总结出一套综合回收铂、铼体均为Y-Al2O3,作为活性物质的铂以金属微 的工艺方法

It is described that the effectual way to construct phase diagrams is the combination of computer calculation with some critical measurements. Examples of application to the CuO-RE2O3 （RE. La, Y, Nd）, Na2B2O4, K2B2O4 and PrCl3-CaCl2-MgCl2 systems are given

一、影响传热膜系数的因素 1、流体流动状态 层流:忽略自然对流时,层流底层=r湍流:主要热阻在层流层,Re↑,边界层减薄,a(注意管件、内构件影响,Re层2000?)

外研版（三起）（2012）小学英语六年级下册Module 10 Unit 1 We're going to different schools.Module 10 Unit 1 We're going to different schools.课件(8)

外研版（三起）（2012）小学英语六年级下册Module 10 Unit 1 We're going to different schools.Module 10 Unit 1 We're going to different schools.课件(7)

外研版（三起）（2012）小学英语三年级下册Module 2 Unit 1 They're monkeys.Module 2 Unit 1 They're monkeys.课件(1)

N ow that we're familiar with the structure and preparation of alkenes, let's look at their chemical reactions. The characteristic reaction of alkenes is addition to the double bond according to the general equation:

Why search (and cite) the literature of your field? Credibility: To be sure that your work is based on current, sound researchthe-- best in your field. Focus: To be able to place your work in context. Efficiency: To be sure that you're not duplicating work