- 外加: more; additional; extra; app ...
- 碳: carbon
- 外加: more; additional; extra; apposition; applied; add ... to; in addition; sur- 这是外加的东西。 this is sth. additional. 晚餐花了3英磅, 还外加酒钱。 dinner cost £3, and wine was extra.; 外加电压 external voltage; applied voltage; impressed voltage
- 加碳材料: carbon reaisor
- 加碳液池: carburizing bath
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