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sapwood n. 邊材,白木質 邊材,白木質 sapwood n 1: newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant; usually light colored; active in water conduction Sapwood \Sap"wood`\, n. (Bot.)
The alburnum, or part of the wood of any exogenous tree next to the bark, being that portion of the tree through which the sap flows most freely; -- distinguished from {heartwood}. [1913 Webster]
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