2025/12/9 8:41:27yue
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
评论信息电缆导体由多根导线绞合而成，它与绝缘层之间易形成气隙，导体表面不光滑，会造成电场集中。在导体表面加一层半导电材料的屏蔽层，它与被屏蔽的导体等电位并与绝缘层良好接触，从而避免在导体与绝缘层之间发生局部放电，这一层屏蔽为内屏蔽层；同样在绝缘表面和护套接触处…
2025/12/9 8:18:25deng
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 7:31:55jue
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2025/12/9 7:19:06geng
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2025/12/9 7:08:31lu
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2025/12/9 7:05:39shi
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2025/12/9 7:02:13mou
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2025/12/9 7:00:02shou
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2025/12/9 6:53:25mou
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 6:42:26{标题}
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 6:17:25zhi
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2025/12/9 5:58:43bo
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2025/12/9 5:56:22weng
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2025/12/9 5:34:06cong
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2025/12/9 5:24:00wu
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2025/12/9 5:17:21tong
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2025/12/9 4:51:54bo
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 4:25:01zhao
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2025/12/9 4:11:36shao
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 4:11:01sai
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
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