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| international annealed copper standard (用相对于标准退火铜线电导率的比值百分比表示国际韧铜标准。国际标准韧铜:其1克重1米长的细丝在摄氏20度的电阻为0.153 28欧姆，以该铜丝的电导率作为100%,用作导电材料的电导率标准) | |||
| international annealed copper standard | |||
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国际韧铜标准 : 1 phrase in 1 subject |
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