控制变量法

采用控制变量法研究不同变量对降解效果的影响，发现：催化剂投加量、溶液的pH值、溶液初始浓度以及光照时间，对最终降解效果均有影响。

To research degradation effects with different variables , we adopted single variable method and discovered that catalyst dosage , solution pH value , solution initial concentration and the time of light irradiation influenced the final degradation effect .

对控制变量法进行了阐述，并指出了如何运用该方法解决地理教学中的难点问题。

Variable-controlling approach is expounded and how to apply this approach in solving difficulties in geography teaching is indicated .

内容涉及到公共随机数法、对偶变量法、控制变量法、重要抽样法、分层方法、条件期望法和其它相关内容。

It includes common random numbers , antithetic variates , control variates , importance sampling , stratification , conditional expectation and others .

本文讨论了物理化学中的几种研究方法，如科学抽象法、理想模型法、本质揭示法、极限外推法、相对数值法和控制变量法等。

This paper discussed a few research method about physical chemistry , such as scientific abstract , ideal mode , essential show , limit inference , relative number , variable control and so on .

采用正交试验和控制变量法深入研究了水玻璃用量、固化剂浓度和固化时间对固沙材料物理力学性能的影响，从而确定了制备固沙材料-绿化砖的最佳工艺参数。

The effect of water glass amount , aluminum chloride concentration , curing time on physical and mechanical properties of sand stabilization material was discussed by combining the orthogonal method with control various methods to find the optimum technological parameters .

通过数值积分求解描述光纤参量放大过程的非线性耦合方程，并应用控制变量法深入研究了最佳光纤长度与光纤非线性系数、抽运光功率、信号输入功率的关系。

By solving the coupled NLS equations that govern the fiber parameter process with numerical integration as well as adopting control variable method , the optimum fiber length as a function of nonlinear coefficient , input pump power and input signal power is profoundly studied .

通过对所构建的实验模型采用控制变量法，研究了不同结构的亥姆霍兹线圈、不同试件密度、不同线圈安匝数等条件下试件所受的电磁力的情况。

Putting the cylindrical sample in the field , and numerical simulate with ansys FEM , we have studied the electromagnetic force which the sample beared in different Helmholtz coil for different densities samples , different Ampere-turns et al by controlling variable in the established experimental model .

求解奇异最优问题的控制变量转移法

The Transferred Method of Control Variables in Solving the Singular Optimal Problems