查询词典 tracheary

The diverse types of tracheary elements and perforation plates in secondary xylem of A. asiatica show that previous knowledge about the tracheary elements and perforation plates in secondary xylem of A. asiatica is not complete and thus any inferences about the aboriginality and evolution of a taxon made depending on these traits are not reliable.

根据类叶升麻次生木质部中多变的管状分子类型，认为以往积累的有关毛茛科植物管状分子类型及导管穿孔板类型是不全面的，因此以该性状为参考作出的有关某一个类群的原始性和进化性的推论也是不可靠的。

As a result, the ratio of the inner-and out-apertures of bordered pits in tracheid, gymnosperm, was 3: 1, in tracheary elements of rattan and bamboo, 1: 1. Other parameters among these plants were various.

结果表明：裸子植物管胞和竹、藤管状分子具缘纹孔的内、外口比例分别约为3：1和1：1，其它各项结构参数均存在较大差别。

As a natural fiber, Nelumbo nucifera fiber is the isolated secondary wall of leaf stalk tracheary elements.

莲纤维是莲叶柄管状分子的离体次生壁，是一种新型天然纤维。

The tracheary elements in secondary xylems of Actaea asiatica root and rhizomes were observered with a scanning electron microscope and found to contain abundant types, which mainly included tracheids, tracheid-like vessels, fibriform vessels, and typical vessels. Of these types, the tracheids, tracheid-like vessels, fibriform vessels were first found. Scalariform perforation plates, reticulate perforation plates, mixed perforation plates and simple perforation plates were observed in the typical vessels and the reticulate perforation plates ,mixed perforation plates were first founded the lateral-wall perforation plates, multiple end walls and pit membrane vestige were also observed in the tracheary elements.

利用扫描电子显微镜对毛茛科类叶升麻根和根状茎次生木质部中的管状分子进行观察，发现其管状分子类型丰富，主要有：管胞、管胞状导管、纤维导管和典型的导管分子，其中管胞、管胞状导管和纤维导管为在该类群中首次报道；在导管分子中，存在着梯状穿孔板、网状穿孔板、混合型穿孔板和单穿孔板，其中网状穿孔板和混合型穿孔板为在该类群中的首次报道；对其导管分子上的侧壁穿孔板、多穿孔板和纹孔膜残余也进行了描述。

Objective To study secondary wall formation of helical tracheary elements in the stem of Cucurbita moschata.

目的 观察南瓜茎螺纹导管发育过程中次生壁的形成过程。

The organelles, such as Golgi bodies together with small vesicles, endioplasmic and reticulum play the key role in the formation of the secondary wall of helical tracheary elements in the stem of Cucurbita moschata, though cortical microtubules are correlative with the process as well.

高尔基体及其分泌小泡和内质网等细胞器参与了导管次生壁的形成，其中周质微管也起了一定的作用。

The absence of exogenous hormone correlated with the absence of vascular and tracheary element connections.

当培养基中添加植物激素时，维管束桥数和贯通的管状分子数随激素浓度和种类的不同而不同。

Some mechanisms of refilling were reviewed due to the physiological roles of refilling of embolized tracheary elements.

鉴于植物管状细胞形成栓塞后重新充注对植物水分运输的重要生理作用，本文对重新充注的许多机理进行了综合评述。

After this, the refilling of embolized tracheary elements can resuscitate water transport in some embolized tracheary elements, and maintain normal physiological functions of some organs.

当植物重新获得水分时，已形成腔隙和栓塞的管状细胞的重新充注能使一部分管状细胞的输水功能得到恢复，从而保证了一些器官的生理功能的正常进行。

When plants are under drought stress or suffer from freezing_thawing cycles, water vapor or air occurs in tracheary elements, i.e, cavitation and embolism occurs in tracheary elements of plants.

在干旱和冬季反复冻融循环以后，植物体内的管状细胞容易充满水蒸气和空气，形成腔

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷