纯金很软，除了芯片上密封用，直径十英寸以上的真空法兰垫圈也用粗一点的金线。铜就太硬了，八英寸以下可以

来源: 人在家坛于 2025-02-22 17:46:16 [旧帖] [给我悄悄话] 本文已被阅读：次

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