英语单词

词典成语诗词造句字典单词小说古文名言

phloem

英 ['fləʊem] 美 ['floɛm]

n. 筛部，[植] 韧皮部

中文词源

phloem 韧皮部（由筛管将叶制造的糖分输送到各部位的植物组织）

来自德语phloem,韧皮部，由德国19世纪植物学家Karl Wilhelm根据希腊语创造出来的一个词，来自希腊语phloos,树皮。

英文词源

phloem (n.): 1870, from German phloëm (1858), coined by German botanist Karl Wilhelm von Nägeli (1817-1891) from Greek phloos, phloios "bark of trees," of uncertain origin, + passive suffix -ema.

双语例句

1. Phloem elements and adjacent tissues are the principal feeding sites for most aphids.: 韧皮部及其邻近组织是大多数蚜虫的主要取食部位.

2. The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.: 中柱包括从原形成层衍生而来的全部初生组织,由中柱鞘、韧质部和木质部组成.

3. Primary phloem PHLOEM derived from the procambium in the young plant.: 初生韧皮部:指幼嫩植物中来源于原形成层的韧皮部.

4. Sugar transport in phloem depends on sugar transporters, and sugar transporters have dual functions, i.: 糖在韧皮部中的运输是由糖转运蛋白完成的, 糖转运蛋白具有双重功能, 即糖载体和糖传感.

5. The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.: 残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况.