high-frequency hardening的用法和樣例：
例句
- Its original heat treament processes were graphitizing annealing,quenching and tempering,then high-frequency hardening.
同時因齒條形狀特殊，高頻淬火時易將齒部完全淬透，不能滿足用戶要求。 - The probability and main effect factors of superplastic welding of structural and tool steel after partly high frequency quenching have been examined.
探討了結構鋼與工具鋼待焊接區表面高頻淬火后超塑焊接的可行性及影響因素。
