paper-insulated lead-covered cable 纸绝缘铅护套电缆 paper insulated lead-covered cable 纸绝缘包铅电缆 non-lead covered cable 无铅包电缆 ..
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paper-insulated lead-covered cable 纸绝缘铅护套电缆
lead covered paper insulated cable 铅包纸隔绝缘电缆
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