查询词典 variable density system

These toxic data(TC50,SDH and LDH) were used as dependent variable and 10 topological indices of 25 aminobenzene derivatives were used as independent variable.QSAR was analyzed with multiple stepwise linear regression.The results indicated that there is different toxicity with different structure of compounds.

内容摘要以大鼠游离肝细胞半数中毒浓度(TC50)和细胞逸出酶为观察指标，研究了25种苯胺类化合物的肝细胞毒性，并利用这些毒性效应数据为因变量，以这些化合物的10种拓扑学指数为自变量，利用多元逐步回归统计分析方法进行了定量结构-活性关系的深入探讨。

These toxic data(TC50,SDH and LDH) were used as dependent variable and 10 topological indices of 25 aminobenzene derivatives were used as independent variable.QSAR was analyzed with multiple stepwise linear regression.The results indicated that there is different toxicity with different structure of compounds.

卫生毒理学杂志990108 内容摘要以大鼠游离肝细胞半数中毒浓度(TC50)和细胞逸出酶为观察指标，研究了25种苯胺类化合物的肝细胞毒性，并利用这些毒性效应数据为因变量，以这些化合物的10种拓扑学指数为自变量，利用多元逐步回归统计分析方法进行了定量结构-活性关系的深入探讨。

The studies on intraspecific variation of Batrachospermum gelatinosum and B.intortum have been made. The results show that the intraspecific variation is widespread. Most of numerical characters are in great variable range. Compared with the reproductive organs, the vegetative organs are more variable to vary.

对胶串珠藻和绞扭串珠藻的种内形态变异进行了初步研究，结果表明，种内形态变异现象普遍存在，变异范围较大的，多属数量性状，且营养结构较生殖结构特征具有更大的变异性。

The variable frequency speed control can be done according to variable diameter or different states of dusts in order to reach the best burnishing effect.

药片抛光机，动力为交流电机，可长时间的工作，变频调速可以按照不同的直径/不同的粉尘状态调整速度，以达到最好的抛光状态。

Then product between the plant height and stem-diameter of sunflower is marked as the integrated index and regarded as primary variable. Choosing water conter and EC as secondary variable, the integrated index of sunflower is estimated using the three variables CK method that is in the form of covariance function.

将向日葵株高与茎粗的乘积记为综合性指标并视为主变量，选取土壤含水率与EC值为辅助变量，分别运用CK法与普通克立格法(Ordinary Kriging，简记为OK法)对向日葵综合性指标进行预测研究。

The decenter variable in the adjustable variables often brings the same kind of aberration as the position offset of the tilt variable does, so they are of considerable relativity.

调整变量中偏心变量和倾斜变量的位置失调常常会产生同种像差，存在一定的相关性。

The second step, as variable content to establish a database file, the database file should contain the variable data business card printing and membership card making all the required information, requirements that correspond one-to-one with the added items and cannot be disnature.

第二步，为可变不步不天拆除数据库文件，该数据库文件不该包含可变数据制卡和会员卡制息所需的全部陈闻，请求所补充的项纲不一差答，不克不及错位。

By multiple statistic method the report finically decides the competence items, which are factor analyzed into 66 items, 12 factors and further combined into 5 dimensions. Knowledge and skill dimension includes knowledge structure, education concept and psychology tutoring skill; ability dimension includes common ability and special ability; self-concept dimension includes self-situate , self-efficacy and self-supervise; personality dimension includes character and emotion; motivation dimension includes extrinsic motivation and internal motivation. It proved that the questionnaire has good internal consistency reliability, and also has good internal validity and structural validity. It could be offer an effective tool to survey the psychology tutoring competence of university counselor. In the second research, using The Questionnaire for psychology tutoring competence actuality of university counselor to investigated 40 counselors and more than 300 college students from 6 college of Wu Han. It validated three hypotheses, the results show: There existed significant difference in university counselor within the variable of college, major, whether do not have assessed remarkable counselor ,how many years to be a university counselor and whether do not ever joined some training of psychology tutoring, but no significant difference within the variable of sex, age and degree.

研究二运用《高校辅导员心理辅导胜任力现状调查》和《高校辅导员心理辅导胜任力现状调查》对武汉6所高校的40名辅导员和300多名大学生实施调查，以辅导员的性别、年龄、学校、学历、专业，以及担任辅导员的年限、是否参加相关心理辅导的培训和是否获得过优秀辅导员称号为分组变量，讨论不同组别的辅导员各项胜任力水平的差异，验证了三个假设，结果表明：(1)学校：不同高校的辅导员心理辅导胜任力水平存在显著的差异，其中教育观念、外在动机和内在动机等方面差异非常显著；(2)专业：整体上，不同专业的辅导员心理辅导胜任力水平不存在显著的差异，但在教育观念、心理辅导技巧、外在动机和内在动机等因子上存在显著差异；(3)工作年限：整体上不存在显著的工作年限差异，但在心理辅导技巧、特殊能力、自我效能感和情感等因子上存在显著差异；(4)是否参加心理辅导培训：参加过培训的辅导员的胜任力水平整体上高于未参加过培训的辅导员，但并不显著，只在知识结构和心理辅导技巧上差异显著；(5)是否获得过优秀辅导员称号：总体上不存在显著的差异，但获得过优秀称号的辅导员胜任力水平在一般能力和性格两个因子上明显比较高；(6)辅导员的心理辅导胜任力水平与其性别、年龄、学历三个变量上各因子的显著性程度都未达到。05，属于不显著的水平。

The article briefly introduce the basic structure, the way of design and calculation, material and lubricate of the frication type variable speed drives, and taking them as the theory basis of the design of mechanical variable speed drives.

本文简要介绍了摩擦式机械无级变速器的基本结构、设计计算的方法、材质及润滑等方面的知识，并以此作为本次无级变速器设计的理论基础。

Now, invented a increasable capacity integrated installation of high/low voltage variable frequencies variable speed for high- middle voltage motor.

&增容型高—低压变频调速集成装置&新方案，具有高功率、高效率、高功率因数、高可靠性、低成本、低谐波、低温升、低压安全、省工时、省投资、省能源和省原材料等特点，为3～10kV 、200～3000kW中高压电动机

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。