2025/12/9 4:58:58chun
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
评论信息我国高压交流输电是采用三相三线制，所以是三根线，高压直流输电是采用二相制，所以是二根线。三根线是从升压变压器出来的三相电，它们的相位相差120度，可以方便推动三相电机转动，也可以分三路提供照明。
2025/12/9 4:45:46feng
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 4:42:13man
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2025/12/9 4:32:39hao
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2025/12/9 4:25:21zhen
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2025/12/9 4:08:27xia
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2025/12/9 4:03:22fu
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2025/12/9 3:49:32cou
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2025/12/9 3:30:50pu
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2025/12/9 3:29:10yi
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2025/12/9 3:14:53lu
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 1:58:59mu
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 1:37:19zhui
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 1:30:19xiao
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2025/12/9 1:27:10nie
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 0:56:44min
https://infogram.com/bd5ee197-3e45-4bde-847c-ba314731203c
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