And the technology of auto-zero is used to overcome the offset disadvantage of linear reference and cancel the offset voltage of amplifier.

同时运用自动调零技术，克服了线性基准的失调缺陷，消除了运放的失调电压，提高了输出电压的失调精度。

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Using laser beam as a linear reference to realize autocollimation Angle measurement has advantages such as high accuracy, long measurement distance, etc.

利用激光光束直线基准进行自准直角度测量具有测量精度高、测量距离远等优点。

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Using laser beam as a linear reference to realize autocollimation Angle measurement has advantages such as high accuracy, long measurement distance, etc.

利用激光光束直线基准进行自准直角度测量具有测量精度高、测量距离远等优点。

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