在天平修理中，变动性是比较难处理的，影响天平变动性的因素也是多种多样的。如果一台天平按规程要求检定后其变动性超差，就要认真分析其原因，逐个排除解决。 下面以ＴＧ３２８型天平为例进行讨论和分析。首先要确认天平的三把玛瑙刀口应该是完好的，而且对天平的各个零部件 In the balance repair, the change is more difficult to deal with, the factors that affect the balance of change is also varied. If a balance according to the procedures required by the test changes in the ultra-poor, it is necessary to carefully analyze the reasons one by one to solve. The following to TG328 type balance for discussion and analysis. First of all, to confirm the balance of the three agate knife edge should be intact, but also on the balance of the various components