回想下欧姆定律就应该明白吧。天冷导致阻力增加和电压降低的关系。。。
所有跟帖:
• you sure? V=IR (Ohm's law), R increase, so V should increase... -hello2002- ♀ (22 bytes) () 01/05/2012 postreply 19:30:41
• you sure? V=IR (Ohm's law), R increase, so V should increase... -hello2002- ♀ (22 bytes) () 01/05/2012 postreply 19:30:41