汉英词典
Chinese-English Dictionary
MEANING OF 韌皮部
韌皮部 (韧皮部)
phloem
〈名〉植物学上指茎的组成部分之一,由筛管和韧皮纤维等构成,可以输导有机养料。
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EXAMPLE SENTENCES

幼茎表达分布在韧皮部

The expressional sites in young stalk are in phloem.

黄檗幼树根韧皮部和茎干基部的韧皮部中主要药用成分含量很高,而叶片、木质部和周皮很低。

The alkaloid contents were highest in root and stem base phloem of Amur corktree saplings, and lower in leaves, xylem and periderm.

韧皮部外有发达的韧皮纤维和较多的蛋白细胞。

There are more developed phloem fiber and many albumin cells surround the phloem.

在横切面上,次生韧皮部的面积比次生木质部大得多。

In the transection section, the area of secondary phloem is much larger than secondary xylem.

维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。

The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous cells.

结果大黄中的活性成分含量以韧皮部最高,髓部次之,木质部最低。

Result The active component content in phloem was the highest, while, successively, in pith and in xylem.

同化物在韧皮部中以液流形式运输,液流中的水主要来自木质部。

The assimilate transports in the phloem by liquid form and the water of the liquid mainly comes from the xylem.

在割胶树的树皮中,有输导功能的韧皮部的厚度不超过1毫米。

In the bark of tapped trees, the thickness of the conducting phloem is less than 1 mm.

每个维管束的韧皮部外面有数层厚壁细胞,增加叶柄的机械支持作用。

There are some sclerenchymatous cells outside the phloem of each vascular bundle to increase the supporting force of the petiole.

异面叶,叶肉组织中含有晶体,韧皮部内富含含盐液泡泡,机械组织发达。

Bifacial leaf and mesophyll tissue contain crystals, phloem is rich in saliferous vacuoles, and the mechanical tissue is developed.