查询词典 xylem rays

The quantity and cell size of the xylem and phloem of the leaf vascular bundle in P. yunnanensis Franch.(Kunming, mid-part of Yunnan) was relatively less and smaller than that in south-east of Yunnan .

滇中地区的云南松，其针叶维管束内木质部和韧皮部的数量和组成分子的大小比滇东南地区的少且相对较小。

Where they occur interspersed with the xylem they may be distinguished from tracheids by their narrower lumen.

纤维分布与木质部相似，其狭窄的腔可与管胞区分开来。

The xylem of ferns and conifers contains only tracheids.

蕨类植物和针叶树的木质部仅含有管胞。

The xylem of ferns only contains tracheids.

蕨类植物的木质部只含有管胞。

These genera and Ephedra also hve advanced tracheids with a structure reminiscent of angiosperm vessels, whereas in other gymnosperms the xylem is composed solely of more primitive tracheids.

这些属以及麻黄属植物和被子植物一样有进化的管胞，而其他的裸子植物的木质部只由很多导管组成。

And shape by using X-ray to penetrate the log . The absorb of X-ray between log internal defect and log internal xylem is different .so the X-ray photograph is different .If we can get the several side X-ray photograph of log .and input the photograph into computer to digital image process . Then we can get the data and the location of log internal defect .

由于原木木质部分与内部缺陷部分对X射线的吸收能力不同，在X射线底片上形成的影像也不一样，如果对检测原木从不同的方向进行照射，再把得到的射线底片输入至计算机内部进行处理，就可以得到原木内部的大致空间结构参数，对原木的加工有重要的辅助作用。

ZT, GAs and ABA concentrations in xylem sap were lower than own-root plant. However, ZT and GAs contents were higher than the control but ABA decreased. In addition, the effect of grafting on increased yield was positive.

伤流液中玉米素、赤霉素和脱落酸的浓度均低于自根植株，但ZT和GA的含量高于自根苗，而ABA的含量低于自根苗。

Pumpkin ( Cucurbita moschata Duch.)'No.1 Shengzhen'was used as rootstock for melon ( Cucumis melo L.)'Yumeiren'in this experiment, and the own-root plant was used as control. The results showed that the root active absorption capability of grafted melon plants with pumpkin stock increased. The quantity of xylem sap of grafted melon was more than own-root. The absorption capabilities of nitrogen and potassium were higher, but lower for phosphorus than the control.

提要 以薄皮甜瓜品种'玉美人'作接穗，以白籽南瓜'圣砧一号'为砧木进行嫁接，以自根苗为对照的结果表明，嫁接植株的南瓜根系主动吸收能力增强，其伤流量比自根植株的大，植株吸收氮钾的能力高于自根植株，而吸收磷的能力则有所降低。

The fiber average length of the phloem is 7.45mm and the fiber average length of the xylem is 0.58 mm.

明，人工种植构树韧皮部果胶含量较高，达11.67％；皮、杆的冷、热水抽出物及1％NaOH抽出物均比杨木高出几倍；韧皮部纤维平均长度为7.45 mm，而木质部仅为0.58 mm。

They are common in many situations, for example as gland cells and epidermal cells, and in xylem and phloem parenchyma, where they are concerned with active loading and unloading of vessels and sieve tubes.

许多情况下都有传递细胞发挥作用，例如：腺细胞和表皮细胞，还有木质部和韧皮部的薄壁细胞，该处导管和筛管的主动装填和排空都与传递细胞有关。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"