| 单词 | 韧皮 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔bast〕Bast fiber.韧皮纤维美国传统〔companion cell〕A specialized parenchyma cell, located in the phloem of flowering plants and closely associated in development and function with a sieve-tube element.伴细胞：一种特殊的软组织细胞，位于开花植物的韧皮部，生长和功能与筛管要素密切联系美国传统〔pericycle〕A plant tissue characteristic of the roots, located between the endodermis and phloem.中柱膜：位于内皮层和韧皮层之间的根系的植物组织美国传统〔phloem〕The food-conducting tissue of vascular plants, consisting of sieve tubes, fibers, parenchyma, and sclereids.韧皮部：导管植物的食物传导组织，包括筛管、纤维、薄壁组织和硬化细胞美国传统〔protophloem〕The first formed phloem that differentiates from the procambium.原生韧皮部：首次形成的韧皮部，用来区别原生层美国传统〔soft-shelled turtle〕Any of various freshwater turtles of the family Trionychidae, having a flat carapace covered with leathery skin and fleshy, elongated snout.软甲龟：一种属于鳖科的浅水龟，长有柔韧皮肤覆盖的、平坦的背甲和肉质的、细长的口鼻美国传统〔tracheophyte〕Any of various vascular plants, including seed plants and ferns, having a conducting system of xylem and phloem.导（维）管植物：任何种类的维管植物，包括种子植物和蕨类植物，具有木质部和韧皮部导管系统美国传统〔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〔vascular plant〕Any of various plants, such as the ferns and seed-bearing plants, in which the phloem transports sugar and the xylem transports water and salts.维管植物：各种植物，如厥类植物和含种子的植物，在此植物中韧皮部输送糖分而木质输送水分和盐分美国传统〔vascular tissue〕The supportive and conductive tissue in plants, consisting of xylem and phloem.维管组织：植物中的支持和输导组织，由木质部和韧皮部构成美国传统 |
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