And then it illustrates the principles and the area to choose the contents for inquiry learning and form three ways of inquiry learning for senior biology teaching , based on it : inquiry and discovery learning , problem - settled learning and inquiry experiment design 然后阐明了探究内容选择的原则和范围,并以此为基础构建了高中生物探究式教学的三条重要路径:探究发现学习、问题解决学习和探究实验设计。
The experiment follows out leading thought on cutting and siutting freeze of fundation and enforcing inflexibility of concrete slate , choose han canal as typical experiment segment , collect freeze index of various canal lining framework , refer the advaced method at home and abroad , adapt new material to make experiment design 本次试验以“削减、适应基土冻胀和增强混凝土板刚度”为主导思想,通过大量灌区现状调查,选取具有代表性的汉渠做为试验段。
The method of identifying and estimating the factor location effect is the main content of reseatch in the traditional experiment design with complete data ( the observation of experiment is known exactly ) . in the standard method the identification of dispersion effects typically requires replications with the fixed factor levels 在完全数据(即试验的观测值无截尾数据)情形下,因子位置效应的鉴别和估计方法是传统试验设计的主要研究内容;而对于因子的散度效应鉴别,传统方法需要在固定因子水平组合下作若干次重复试验。
Through orthogonal experiment design , the preparation technology of reactive extrusion dynamic vulcanization for low hardness epdm / pp blend thermoplastic dynamic vulcanizates was studied , and the effects on micromorphology of extruded vulcanizates of such main technological factors as barrel temperature , feed screw driven voltage and host machine screw rotation rate were discussed 摘要通过正交试验设计,研究了低硬度epdm / pp共混型热塑性动态硫化胶的反应挤出动态硫化制备工艺,初步探讨了机筒温度、喂料螺杆驱动电压及主机螺杆转速等主要工艺因素对挤出物微观相态结构的影响。