The design of the pantograph's active control system and the study of the simulation results reduce the fluctuation of the contact force theoretically and thus improve the current collecting quality.
通过受电弓主动控制系统的设计和对其的仿真研究，理论上降低了弓网系统接触压力的波动，从而改善了受流质量。
With PC, eddy current sensor and sound card, a vibration signal collecting system was designed. Laying position of the sensor was explained.
测试系统采用PC计算机、电涡传感器，声卡，建立了乳化液泵振动信号的信号采集系统并对测点的安放进行了说明。
However, the current system of collecting evidence fails to realize the real equal confrontation between the accused and the defended in the court owing to the juridical limitations.
但在取证权制度的设置上由于现行立法缺陷，导致庭审过程流于形式，难以实现控辩双方积极对抗。
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