Implementation of the procedure to add a second trigger the interval timer.
实现方法在程序中添加一个触发间隔为一秒的计时器。
To define the procedure, standard and interval for Calibration of Electronic balance.
定义电子称的校准步骤，校准标准及校准周期。
To define the procedure, standard and interval for Calibration of Electronic balance.
定义电子称的校准步骤，校准标准及校准周期。
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