constructional steel的用法和樣例：
例句
- Choice of steel types for the metallic construction and boiler making for brittle fracture hazard prevention.
防止脆性斷裂危險用金屬結構鋼和鍋爐製造用鋼的類型選擇。 - 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。
