Taking Xi′an ground fissures as an example, the effectiveness of resistivity method in surveying ground fissures and the depth of detection of DC electrical method are discussed.
以西安地裂缝为例，探讨了电阻率法勘察地裂缝的应用效果及直流电阻率法的勘探深度问题。
The method of finite state machine together with PWM circuit is given to realize the algorithms of Voltage Space Vector control and 120 electrical Angle changing phase control of DC brushless motor.
针对电机空间矢量控制和直流无刷电机120电角度换相控制算法的电路实现，采用了控制状态机与PWM发生电路相结合的方法。
The traditional method of DC electrical survey is applied to search for water sources in the groundwater study and achieves better effect in confirming exploitation quantity of groundwater.
传统直流电法勘探方法，在地下水研究中应用于寻找水源、确定地下水的开采量取得了较好的应用效果。
The traditional method of DC electrical survey is applied to search for water sources in the groundwater study and achieves better effect in confirming exploitation quantity of groundwater.
传统直流电法勘探方法，在地下水研究中应用于寻找水源、确定地下水的开采量取得了较好的应用效果。
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