The directcurrent system is an important component of the transformer substation, but its grounding is a common defect.
直流系统是变电站一个重要的组成部分，直流系统接地是常见的缺陷。
2
Thus, a direct bus current can be detected precisely and an upper harmonics component is inhabited.
由此，高精度地检测直流母线电流，抑制高次谐波成分。
3
Through controlling the vibration amplitude and directcurrentcomponent of the driving wave for the varifocal mirror, we can obtain the different depth range.