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词汇 sap wood
释义 sap wood
基本英英例句
边材

名词 sapwood:
newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant; usually light colored; active in water conductionSapwood is the lighter colored wood growing from inside the bark to the heartwood.边材色泽较浅,是从树皮到新材之间的木质部分。
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