Periodic Table是同学们学习AP化学遇到的第一个重点,也是非常基础的知识要点。 首先,同学们要学会看整个元素周期表,以下几个名词及其含义都是必须要理解和记忆的: 1.横向按电子层数排列,称为Periods周期2.纵向按最外层电子数排列,称为Group族3.元素周期...
Cd(Cadmium)1 C(Carbon)4 N(Nitrogen)4 e(Electron)2 Because the molecule has a negative charge, we need to count the number of extra electrons. 2. Find Atomic Mass of Each Element Next, using theperiodic table, find the atomic mass in g/mol of each element (the molar mass of an ele...
Pauli exclusion principle 保里不相容原理(每个原子轨道至多只能容纳两个电子;而且,这两个电子自旋方向必须相反 ) Periodic Table 周期表 physical property 物理性质(物质不需要发生化学变化就表现出来的性质,如颜色、状态、气味、熔沸点、密度等) plastics 塑料 plum-pudding...
Figure 5. Point of zero charge of C. zizanioides root. 3.2. Sungun Wastewater The chemical elements of the Sungun wastewater sample and its concentrations were measured before the biosorption process in order to assess the wastewater sample’s quality and also evaluate the results after the...
Kollman’s united atom partial charges and polar hydrogen atoms were assigned for the proteins using AutoDock tools [26]. As HA closely resembles the niacin structure, we used similar grid box dimensions as mentioned in our previous study with the grid size set to 70 × 70 × 70 points ...
electric charge 电荷 electric voltage 电压 electric shock 触电 electric appliance 电器 conductor 导体 insulator 绝缘体 semiconductor 半导体 battery (cell) 电池 dry battery 干电池 storage battery 蓄电池 electronics 电子学 electronic 电子的 electronic component (part) 电子零件integrated circuit 集成电路 chip...
形容词+名词atomic weight原子量 periodic table周期表 动词+代词+副词pick-me-up兴奋剂 副词+介词+名词out-of-door户外 2.4压缩法(Shortening) (1)只取词头字母 这种方法在科技英语中较常用。 EST:English for Science and Technology科技英语 EPT:English Proficiency Test英语水平考试(中国) ...
Table 2. Decreased expression of NKRs on CD8+CD45RA+CD27- cytotoxic T cells in B-CLL Empty CellNKB-1CD94CD158aCD158b Control, n = 9 CD8+ 3±1 11±3 4±2 5±1 CD8+CD45RA+CD27- 13±3 29±8 11±1 21±3 B-CLL, n = 18 CD8+ 3±0.6 8±2 2±0.3 7±2 CD8+CD45...
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Based on the effective mobility measurements at different concentrations of HDAS-β-CD, it was revealed that STD and LIN are weakly bound to HDAS-β-CD because they remained cationic throughout the entire concentration range tested, bearing in mind that the CD used has a negative charge over...