Aluminac
艾留米奈克铝合金, 阿尔帕克斯铝合金
🗣️ 情景例句
It's my private affair.
这是我私人的事。
The remark made him shudder with fear.
那些话使他因恐怖而颤抖。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。