ring currents 中文意思是什麼
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In applications where high impedances and very low currents are involved a guard ring may be used to minimize the effects of low insulation resistance
保護環用在那些高阻抗或電流非常微弱的電路中，用於減輕因絕緣電阻不夠高而產生的（漏電）問題。 -
Since fulvenes show no evidence of ring currents, the chemical shifts of the protons will be found in the normal definite region.
既然富烯不顯示環電流存在的跡象，所以質子的化學位移仍然發生在正常的鏈烯區。
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