xylem怎么读，xylem什么意思，xylem短语和例句

1.Summertime bud grafting can be cut take shoot piece, or take xylem shoot less piece, in stock bine dry place decorticates.

夏季芽接可削取芽片，或少带木质部芽片，在砧木茎干处剥皮。

2.The secondary xylem of the original plants in local acidic environment was replaced by silica and turned into fossil woods.

处在酸性垒的原植物次生木质部组织被二氧化硅替换而成硅化木。

3.The harmful effect of injecting chemical into tree on the xylem, bast, periderm and tree body was studied.

本文就树干注入农药，对木质部、韧皮部及周皮和整个树体是否产生不良影响做出评价。

4.The positive xylem pressure, often occurs with low transpiration rate, is termed as root pressure.

在植物弱蒸腾情况下，木质部的水分处于正压状态，这种压力叫根压。

5.The discovery of nuclei existing in mature xylem cells is a new one in Wood Anatomy.

在成熟木材细胞中发现细胞核是木材解剖学的新发现。

6.A system confined to the transport of mineral elements is known as the xylem.

专门用来运输矿物元素的系统称为木质部。

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

维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。

8.The secondary xylem of the original plants in local acidic environment was replaced by silica and turned into fossil woods.

处在酸性垒的原植物次生木质部组织被二氧化硅替换而成硅化木。

9.It is an important pathway for movement of these substances outside the xylem, for example across the root cortex.

质外体是木质部外方物质运动的一个重要途径，例如物质穿过根冠。