The measurement of alternating potential difference may be perturbed by stray current.
交变电位差的测量可能受到游散电流的影响。
In the process of experiment, it is found that alternating potential (AP) on shielding has changed when the vacuum degree descends to a certain degree.
试验发现真空度下降到一定值时屏蔽罩上形成的交流电位幅值会发生变化，同时屏蔽罩上还会有直流电位生成。
In the process of experiment, it is found that alternating potential (AP) on shielding has changed when the vacuum degree descends to a certain degree.
试验发现真空度下降到一定值时屏蔽罩上形成的交流电位幅值会发生变化，同时屏蔽罩上还会有直流电位生成。
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