The design and application of the CAL software offsets deficiency of conventional experiment teaching instrument and heighten the experiment to a new level.
这一软件的设计和应用，弥补了传统实验教学手段的不足，使实验教学提高到新的水平。
By use of magnetic balance which is general physical experiment instrument, a simple and new method of measuring the charge-mass ratio of electron mass developed.
使用常用物理实验仪器磁天平，开发出用于近代物理实验测量电子荷质比的简易新方法。
At experiment teaching, experiment renewal of content can form to instrument new demand, cause the stand-by of some instruments too.
在实验教学时，实验内容的更新又会形成对仪器更新的需求，也造成一些仪器的闲置。
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