sap wood
英漢例句
- Sapwood is the lighter colored wood growing from inside the bark to the heartwood.
邊材色澤較淺,是從樹皮到新材之間的木質(zhì)部分。 - Heartwood is the mature wood, which is often darker, extending from the sapwood to the pith.
心材通常是成熟的木材部分,通常色澤較暗,範(fàn)圍從邊材一直到髓心。