| 释义 |
hard·en·ing AHD[härʹdn-ĭng] D.J.[ˈhɑːdnɪŋ]K.K.[ˈhɑrdnɪŋ]n.（名词）- The act or process of becoming hard or harder.硬化：变硬或变更硬的动作或过程
- Something that hardens, as a substance added to iron to yield steel.硬化剂：如加在铁上使其形成钢的硬化性物质
- Gradual exposure of plants to cold weather.把植物逐渐暴露在冷天气下的过程
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