分体

Stamens 10, sometimes with spurs or awns, dehiscing by pores, pollen in tetrads, rarely single.

雄蕊10，有时有距或者芒，孔裂，花粉为四分体，很少单体。

The results showed that: at metaphase I, the homoeologous chromosome pairing among different F1 hybrids ranged from 2.0 to 11.4 bi-valents formed by homoeologous chromosomes per pollen mother cell, and very few multivalents, and even very few bivalents were formed by two chromosomes within one genome rather than homoeologous chromosomes in some PMCs; at anaphase I, all biva-lents were disjoined and most univalents were divided.

结果表明在中期I阶段，这些杂种一代的近缘染色体联会变化很大，每个花粉母细胞中二价体形成的数目从平均2个到11.4个不等，甚至在某些花粉母细胞中，还发现极少的多价体和非部分同源染色体所形成的单基因组内二价体；在后期I时，所有的二价体分离，同时多数单价体也分离，分离的二价体和分离的单价体都移向两极，从而形成两组染色体；因为这时完整花粉母细胞中分离的二价体在两组染色体中总是对应出现，从而根据半二价体上染色体重组的位置可以分析在二价体的四分体时期发生在非姊妹染色体之间的多种染色体交换类型，如单交换、三线双交换、四线双交换、四线三交换和四线多交换。

This paper introduces the characteristic of the electric control system of MARK8-MAXIII tobacco machine set made in England, and redesigns a set of integrated control system with programmable controller.

本文采用可编程控制器对卷接机组进行集中控制，代替了原机组的分体控制系统，并使用交流变频器实现主机的速度控制，极大地提高了系统的可靠性和控制性能。

The proliferation of the anthers and pollens were distinctly dysplastic. During the prophase of abortive pollens, the tapetums and middle layers of quadrants separated; during metaphase, the microspores were development arrest; during anaphase, the tapetums and microspores gradually disappeared after combination, the anthers finally turned into drying and shriveling to be unable to form pollens.

如主茎开花初期提前1~2d，花萼和雄蕊个数为4~6个，花药室数为2~4个，开花后花药呈白色或淡绿色，表面无皱纹，并延迟脱落；其花药和花粉发育明显异常，败育初期在四分体期绒毡层与中层分离，中期小孢子形成时期发育停滞，后期绒毡层与小孢子粘连后逐渐消失，终期花药干瘪，不能形成花粉。

The structure and material of crankcase bearing block of engine are introduced in this paper,and the feasibility that whether the fracture splitting technology can be applied to the bearing block is also analyzed.

介绍了发动机曲轴箱轴承座的结构、材料，分析了裂解加工工艺应用于轴承座裂解加工的可行性，阐述了裂解加工的机理、主要工艺流程、影响质量的主要因素、性能及经济效益分析，说明采用裂解加工方法加工曲轴箱轴承座，改变了过去轴承座与轴承盖分体加工的复杂工艺流程，具有加工工序少、节省精加工设备、节材节能、提高产品质量等优点，经济效益是明显的。

Guiding cover and guiding board adopt separate structure, guiding cover adopts ceramic material with characteristics of good wear resistance and long service life .

导向套与导向板采用分体结构，导向套可单独更换，且导向套采用陶瓷材料，耐磨性好，使用寿命长，大大降低了使用成本。

Collector Product Features: A endothermic polymer coating surface treatment, heat-absorbing rate of more efficient solar power the world's leading B Closed cycle heat exchange technology, allowing the system to the utilization of solar power to reach the maximum limit of Physics C elegant flat-plate collector, with the cabinet sub-body combination with your housing to integrate natural and harmonious, more secure appearance.

产品特点集热器：A 高分子吸热涂层表面处理，吸热率更为高效B 世界领先的太阳能闭合循环热交换技术，使系统太阳能利用率达到物理最高限C 优雅的平板式集热器，与箱体分体组合，与你的房屋自然和谐的地融为一体，更安全美观。

Those four words fully embody the hypocrisy of CCTV's value of what qualifies as news, at the same time exposing all Chinese people's long-accustomed tradition: unawareness when it comes to protecting minors.

这五个字充分体出了中央电视台的伪善新闻价值观，同时也暴露了所有中国人都习以为常的传统——意识不到保护未成年人。

In the isolated microspore culture, part of microspores were swelled and few could develop into tetrads and died after 1 week..

在游离小孢子培养过程中，仅发现部分小孢子膨大，极少数能继续分化成四分体，1周后则被降解。

Multiple ring forms are seen, as well as rare tetrads.

其形态大多数呈环形，少见为四分体 tetrads。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。