Why didn't USE use 220 V in the first place?

Why didn't USE use 220 V in the first place?

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送交者: HunHunSheng 于 2005-3-15, 13:51:39:

回答: 你问反了：220V交电标准是吸取美制110V线路耗损太大才改进的由 2Cul4U4 于 2005-3-15, 13:47:36:

经验，条件限制？ - 2Cul4U4 (0 bytes) 2005-3-15, 14:02:21
- 110 V is much better choice because much fewer people get electrocuted - HunHunSheng (47 bytes) 2005-3-15, 14:26:55
  - 差得不多吧，超过36V的交流电都有可能致命 - 2Cul4U4 (0 bytes) 2005-3-15, 14:32:04

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