To reduce error due to voltmeter non-ohmic contacts, use shielding and appropriate grounding to reduce ac pickup.
为了降低电压表的非欧姆接触所产生的误差，采用屏蔽和适当的接地措施来降低交流干扰。
At the same time CCD pickup camera and laser sensor are combined to meet the high efficiency and high accurateness requirements of this non-contact measure.
同时测量系统中采用CCD摄像头和激光传感器相配合，实现了高效、高精度的非接触式测量方案。
At the same time CCD pickup camera and laser sensor are combined to meet the high efficiency and high accurateness requirements of this non-contact measure.
同时测量系统中采用CCD摄像头和激光传感器相配合，实现了高效、高精度的非接触式测量方案。
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