单词：hardening and tempering
hardening and tempering的用法和样例：
例句
- The application of nonhardened and tempered steel is predicted.并预测了非调质钢的应用前景。
- Being compared with the normalized steel,the quenched and tempered steel can led to a joint with higher strength and toughness.正火态与调质态母材相比，后者可得到强韧性较高的接头。
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