1) polar number
极性价数
2) polar covalence
极性共价
3) ending evaluation
终极性评价
1.
The purposes of setting up a comprehenslve evaluation system of the teaching skills for the students in normal univetsities are to decompose basic teaching skills so as to put them into specific testing targets and to construct a student-directing teiting approach that consists prima rily of shaping evaluation and complementarily ending evaluation.
建立高师学生师范基本技能综合评价指标体系,目的是通过将师范职业技能分解、细化为各个具体的考核指标,构建针对学生个体的,以形成性评价为主、终极性评价为辅的测评方式,充分发挥评价的调控、激励功能,帮助学生明确发展的目标和努力的方向,促进高师学生师范职业技能全面、快速的提高。
4) positive appraisal
积极性评价
1.
Teachers positive appraisal on students in English teaching can help them build their self-confidence and improve their performance in the study.
英语教学中教师对学生的积极性评价 ,能树立学生学习的自信心 ,促进其学习水平的提高。
5) polar bond
极性共价键
6) polarity index
极性指数
1.
The polarity index ((O+N)/C atomic ratio) and components (waxes, cutin monomer, polysaccharide) of all cuticular fractions were characterized by elemental analysis and the recoveries of each fractions were determined.
5%生物高聚物(cutan)组成,脱蜡、皂化脱角质单体后角质组分的极性指数((O+N)/C)增大,而酸解脱糖后(O+N)/C则减小。
2.
Sorption nonlinearity was found to be a function of the polarity index of sediments natural organic matter(NOM), suggesting that the degree of condensation of NOM, characterized by its polarity index, was correlated with the sorption behavior of 1,2,4-trichlorobenzene.
研究表明,所有的吸附等温线均表现出明显的非线性,且非线性的程度与以极性指数(O+N)／C呈负相关关系,表明NOM的聚合度(以极性指数为表征)直接影响着吸附非线性程度。
3.
According to Kier’s molecular connectivity coefficient theory, the polarity index which is on the base of molecular connectivity coefficient and functional groups contribution index was used to denote polarity.
根据Kier的分子连接性理论,利用分子连接性指数与官能团贡献参数得到的极性指数来推断溶剂的极性,根据萃取剂极性指数与被分离体系中各组分极性指数的差异来选择萃取剂,即萃取剂的极性指数与被萃取组分的极性指数差异尽可能小而于其他组分的极性指数差异大。
补充资料：股价平均数
股价平均数——
股价平均数是采用股价平均法，用来度量所有样本股经调整后的价格水平的平均值，可分为简单算术股价平均数、加权股价平均数和修正股价平均数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条