It 's suggested that you make calibration of the electric power of the battery every three months.
建议平均三个月进行一次电池电力校正的动作。
The TK-DL automatically checks its calibration and battery power when turned on and before each test.
每次检测之前打开TK -DL时，TK - DL都能够自动检查量程和电池容量。
The TK-DL automatically checks its calibration and battery power when turned on and before each test.
每次检测之前打开TK -DL时，TK - DL都能够自动检查量程和电池容量。
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