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。
The overlaps of styles of writing in language communication refers to the phenomena of alternating and overlaps of various styles of writing. It includes practical and potential overlaps.
语言交际中的语体交叉是指在语言交际中各种语体穿插、交叠的现象，它包括潜在的语体交叉和现实的语体交叉。
Through electrostatics and examples of low-frequency alternating current and direct-current circuit, the problem of zero potential point is queried and clarified.
通过静电学、低频交流、直流等电路实例，质疑了电势零点问题，并对此进行了澄清。
Through electrostatics and examples of low-frequency alternating current and direct-current circuit, the problem of zero potential point is queried and clarified.
通过静电学、低频交流、直流等电路实例，质疑了电势零点问题，并对此进行了澄清。
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