自动零位跟踪，上电自动清零功能。

Have functions of automatic zero follow and automatic zero clearing when power up.

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上电自动清零功能。

Have functions of automatic zero clearing when power.

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采用微计算机及背光液晶显示屏作为人机操作界面，具有定量设定、清零与定量生产功能。

Uses the microcomputer and the back light liquid crystal display monitor as the man-machine operation interface, has the ration setting, reset and the ration production function.

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