Evaluation methods of scale inhibitors in the cooling water 循环冷却水用阻垢剂性能的评定方法
Impression method of scale mounting 印纹鱼鳞保存法
Study on a new evaluation method of scale inhibitors based on solution conductivity measurement 溶液电导率法快速评定阻垢剂性能的试验研究
At present scale inhibitors have already been used as one of the most usual methods of scale controlling 使用阻垢剂已成为目前控制结垢最常用的方法之一。
Secondly , we investigate the nonlinear dynamics if the system by using the multiple method of scale , and discuss the stability of the steady - state solution 其次对系统进行了非线性动力学的分析,利用多尺度方法获得了一次近似响应,讨论了定常解的稳定性。
( 3 ) we investigate the nonlinear dynamics of the rotor - ambs system in 1 / 3 and 1 / 2 subharmonic resonances . using the multiple method of scale , the averaged equations of the rotor - ambs system are obtained ( 3 )利用多尺度方法,研究了电磁轴承-转子系统的1 3亚谐共振和1 2亚谐共振情况下的非线性动力学,得出了两种共振情况下的频幅响应方程。
( 3 ) we investigate the nonlinear dynamics of the inverted pendulum system in 1 / 1 internal resonance and 1 / 2 sub harmonic resonance . using the multiple method of scale , the averaged equations of the inverted pendulum system are obtained ( 3 )应用多尺度方法研究了倒立摆系统在内共振和1 / 3亚谐共振情况下的非线性动力学响应,得出系统的平均方程,得到了系统的频率响应方程,对周期解和局部分叉进行了分析。
In chapter two , theories and methods of scale economy , scope economy , the cost precipitates , network hustle are used to analyze systematically technical and economic characteristics of power industry , especially nature monopolization and commonality goods characteristics that directly influence electric market structure 第二章运用规模经济、范围经济、成本沉淀性、网络拥挤性等理论方法系统地分析了电力产业的技术经济特征,尤其是直接影响电力市场结构的自然垄断性和公共物品性。
The multiple method of scale is used to obtain the averaged equations in primary parameter resonance . from the averaged equations , the theory of normal form is applied to find the explicit formulas of normal form associated with a double zero and a pair of pure imaginary eigenvalues with the aid of the maple program 利用多尺度方法得出了主参数共振情况下的平均方程,利用normalform理论对具有双零特征值和一对纯虚特征值的平均方程进行了简化,得到了平均系统的normalform 。