筛管

Paclobutrazol and Unlconazole inhibited the cell elongation and cell division, plant nutrient transportion and the growth of other parts of the plant, which were the main reasons of the Coleus blumei dwarfing.

多效唑和烯效唑对其细胞伸长和分裂有抑制作用，限制了筛管营养物质的运输，抑制了植株其他部位的生长，这些是使彩叶草株型矮化的主要原因。

Cyclosis The streaming of cytoplasm in a circular motion around the cell observed in some plants, particularly young sieve tube elements.

胞质环流：在一些植物细胞特别是在幼筛管分子中观察到的细胞质围绕细胞的环形流动的现象。

In contrast to xylem components , sieve tube elements have nonlignified cell walls , and a living enucleate without a nucleus protoplast .

与木质部组分不同，筛管分子具有未木质化的细胞壁，没有核但有活的原生质体，因此是活细胞。

The cortical cells had thin walls and mitochondrium, and nucleus wassurrounded by chloroplasts, and vesicles were next to cell plasmalemma. However, cellwalls of velamen, cortex and exodermis in the mycorrhiza of D. nobile had ring orpapillary thickenings in many cases. The hyphae were surrounded by moremitochondria and vesicles of plant, and the hyphae were digested and their structure waschanged at last. The cell wall of endodermis also had typical ring thickenings, and manysieve orifices in sieve tube elements of phloem were covered by callose, while therewere liaison cords in a few sieve orifices.

金钗石斛菌根的根被细胞的细胞壁多处出现环形圈，外皮层细胞壁加厚，木质化，也有环形圈存在，皮层细胞细胞壁多角形明显，加厚，皮层细胞中存在被消化、失去结构的真菌菌丝，在菌丝周围有较多的线粒体、小泡，内皮层细胞的细胞壁呈现的典型的加厚及木质化环形圈，韧皮部筛管的筛板结构，绝大多数筛孔已为胼胝质所覆盖，仅个别筛孔中还存在连络索。

Based on the results of previous studies concluded on the basis of summing up the cracks in the reservoir area characteristics, and boldly against the cracks in the northwest edge of Qaidam Basin, the reservoir development process, the right of oil in the practical application of the You quan zi oil field winding Screen End Well Technology and small acidification of Technology, to take the good results.

本文在参考前人研究成果的基础上，总结了本区储油裂缝的特征，并大胆提出针对柴西北缘裂缝油躲的开发工艺，在油泉子油田实际应用了海带缠绕筛管完井工艺和小型酸化工艺等工艺技术，取到了良好效果。

Using electronic microscopy,the development of secondary phloem SE was investigated in Populus deltoides.

该文以美洲黑杨为实验材料，在电子显微镜下观察研究了次生韧皮部筛管发育过程。

Cytological observation showed that after spraying Paclobutrazol and Unlconazole, the length of the epidermal cells of the stem became significantly shorter but not its width, its pilus epidermidis significantly shorter, the number of cells for each pilus epidermidis significantly less and the diameter of its sieve tube became significantly smaller.

细胞学观察表明，喷施多效唑和烯效唑，其茎秆表皮细胞长径显著变短，短径无显著变化；茎秆表皮毛显著变短，每个表皮毛的细胞数显著减少；茎秆筛管直径显著变小。

All these factors such as sand prevention method、sieve tube style selection、sand controlling result、oil and gas well off-take potential、oil and gas well longevity and cost of production are incident with one another as well as interaction.

油气田采用的防砂方法、筛管类型选择、防砂效果、油气井产能、油气井寿命和生产成本，这些因素既相互关联又相互制约。

It has a nucleus, dense cytoplasm, and many mitochondria, and is thought to provide, Via PLASMODESMATA, the needs of the less metabolically active, enucleated sieve element and perhaps plays a role in regulating the flow of metabolites through the sieve tube.

伴胞具有细胞核和浓厚的细胞质，还有大量的线粒体提供能量。筛管分子去除细胞核，仍能生活，可能与伴胞的存在有关。

Citrus huanglongbing is a serious citrus disease in Asia and Africa. It is caused by the infection of Candidatus Liberibacter asiaticus, a fastidious bacterium that resides in the sieve tube of host plants.

柑橘黄龙病 citrus huanglongbing 为亚洲和非洲地区重要的柑橘病害，引起柑橘黄龙病之病原体 Candidatus Liberibacter asiaticus 为寄生在寄主植物筛管的薄壁细菌，无法以人工方式培养。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失