发布时间:2025-01-30 06:01:52
其实导体的发热与电阻有关,电阻丝是用电阻率比较大的材料做成,而导线是用率比较小的铜作成,所以在通电时电阻丝发热,而导线不发热
晶体管超外差式收音机(X—921型收音机)每部分的作用及原理
2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52 2025-01-30 06:01:52空调接水盘内的脏水像鼻涕一样粘稠有什么办法可以溶解掉粘稠物便于空调排水畅通
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