variable resistance

Horizontal resistance, being variable in the wild state, can be domesticated.

水平抗性在野生状态下是可变的, 它可以驯化.

It is obvious that the gas turning back phenomenon occurs in variable pressure gas exhaust system. The resistance coefficients of two types of check valves ( B and C) are experimentally measured.

通过实验测定了B型和C型两种止回阀的自身阻力系数和系统气流合流阻力系数，并对两种止回阀所对应的系统排风量进行了实测。

When selecting different resistance and inductance, variable frequency control of USM can be realized.

电路中选择不同的电阻和电感值可以实现调频, 即对超声波电机的变频控制.

In order to analyze the influence on continuation power flow calculation by change of line resistance, this paper presents the electro-thermal power flow model and electro-thermal continuation power flow model in which the line resistance is considered as state variable of power grid.

为分析其对连续潮流计算产生的影响程度，本文提出将输电线路电阻作为潮流的状态变量，首先建立包含电阻参数的电热耦合潮流模型，并进一步提出电热耦合连续潮流模型。

BWR control system modeling: based on the model, establish the BWR reactor power plant control system, and complete the real-time simulation of variable conditions and fault conditions, which verify the regulatory functions and disturb resistance capacity of control system. 4.

3控制系统建模：在模型基础上建立了沸水堆反应堆核电站的控制系统模型，对于电厂发生的变工况及故障工况能够进行实时的模拟，验证了控制系统的调控功能和抗干扰性。

This article compares the advantages and disadvantages of the constant current charging 、 PWM charging 、 constant voltage and solid resistance charging and stage charging methods to get the new charging method of controlling strategy that is variable resistance of maximum power point two stages charging method.

为了节约电能、保护蓄电池，本文比较了恒流充电、PWM充电、恒压固阻充电和阶段充电方法的优、缺点，提出了本文的充电控制策略即最大功率点变阻二阶段充电方法。