This contact(触点) is moved along the wire(导线) until a position is found at which the galvanometer(电流计) shows no deflection.
举一反三
- The ‘tooth position’ refers to () A: The intercuspal position B: The retruded contact position C: The mandibular postural position D: The muscular contact position
- Which of the following picture shows the tongue position of the sound of [ŋ]? 未知类型：{'options': ['', '', '', ''], 'type': 102}
- Electric circuit is a combination of a conductor and of a source of e.m.f. which permits electrons to flow along a ______. A: stream B: wire C: terminal D: light
- 中国大学MOOC: there is a wire pole along the road _____ meter.
- A bee can tell other bees by doing tail-wagging dance that he has found food, which shows that bees have language.