計(jì)算電勢(shì)時(shí)q帶正負(fù)號(hào)嗎?
計(jì)算電勢(shì)時(shí)q帶正負(fù)號(hào)嗎?
數(shù)學(xué)人氣：288 ℃時(shí)間：2020-09-01 00:48:13
優(yōu)質(zhì)解答
必須帶正負(fù)號(hào),電勢(shì)是標(biāo)量,負(fù)號(hào)表示該點(diǎn)電勢(shì)低于零電勢(shì),正好表示高于
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