| 单词 | secondary xylem |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔growth ring〕A growth layer in secondary xylem seen in a cross section.生长轮，年轮：树木横截面的次生长木质部的生长层次美国传统〔secondary tissue〕Tissue produced by a lateral meristem, such as secondary xylem and cork.次生组织：分生组织所长出的组织，像是次生木质部及木栓层美国传统〔vascular cambium〕A lateral meristem that produces secondary xylem to the inside and secondary phloem to the outside.维管形成层：一种横向的分生组织，向里面产生补充的木质部并向外产生补充的韧皮部美国传统〔wood〕The secondary xylem of trees and shrubs, lying beneath the bark and consisting largely of cellulose and lignin.木质：位于树皮下的树和灌木的次木质部，主要由纤维质和木质构成美国传统 |
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