可分裂的

It turned out that hematopoietic stem cells be immortalized by constitutive Notch1 and Delta has the function as the mitogenic regulators of hematopoietic stem cells.

研究人员将活化形式Notch受体导入造血干细胞，使其获得了细胞因子依赖性的"永生"；另外，Notch的配体Delta、Jagged具有类有丝分裂因子作用，可保持造血干细胞的自我更新能力，促进其体外增殖。

Centromeres could be identified easily on the bivalents at diplotene, so it was convenient to analyse the karyotype.

结果表明，日本沼虾染色体数n=52，2n=104，据双线期二价体的相对长度、着丝点位置以及形态诸方面的特点分析了核型，共分为A，B，C，D4个染色体组，核型组成是N=37M+4ST+11T；初级精母细胞减数分裂前期I可分为细线期/偶线期、粗线期、双线期和终变期5个时期，双线期的二价体存在弥散阶段，核仁明显，且双线期二价体着丝点清晰，给核型分析带来了方便。

Vitamin D metabolites prevent disjunction of cells and are beneficial in other phases.

维生素D的代谢可预防细胞的分裂，且在其它阶段中是有益的。

The results show that the DL can offer the important information of photosynthesis, cell division and energy transformation of plant species.

结果表明，延迟发光与生物样品的种类及所处的代谢阶段有关，可提供植物光合作用、细胞分裂和能量转换的重要信息。

The operator splitting/finite element method with unstructured triangular grids are used to solve the general gas lubrication equation and the perturbation method is adopted to analysis the stability of the coupling system of air film and slider.

论文的计算结果表明算子分裂法能有效克服高轴承数下数值解的振荡问题，可得到合理的气体压强分布和气浮力。

The relationship between Tang and Tufan can be divided into three stages: namely the friendly stage in the period of Qizongnongzan, the war and peace stage after the death of Qizongnongzan and period of Tufan's sending tribute to Tang after the division of Tufan Regime.

吐蕃与唐朝交往可分为三个阶段：弃宗弄赞时代的友好交往、弃宗弄赞卒后的时战时和、吐蕃政权分裂后向唐朝入贡。

Cytokinins are important plant hormones and can delay plant senescence .

细胞分裂素是一类重要的植物激素，它可在一定程度上延缓植物的衰老。

When optimal levels of growth substances, particularly auxin and cytokinins, are utilized, many species of gesneriads can be generated from a single leaf.

当生长调节物质，尤其是生长素和细胞分裂素的含量适宜时，某些苦苣苔在3～4个月内可由一片叶子再生1000株以上的小植株。

LiNi0.95Mg0.05O2 could be formed with I(003)/I(104) ratio 1～1.1, R-factor I(006+I(102)/I(101) ratio 0.67～0.94, and (108)/(110) splitted peak, c/a ratio 4.914～4.925, in R3m space group under the conditions of 210~280 MPa pelletized powder, heating rate 2℃/min to precalcined temperature 600℃ for 9～15h,crushed and repelletized, heated till 600℃ in 5℃/min, then switched to 1℃/min till 750℃ isothermally for 15～20h all in oxygen flow.

发现以210～280 MPa对试样压片，在氧气气氛下经2℃/min升温速率升温至600℃，预烧9～15h后，再粉碎、压片以5℃/min升温至600℃之后以1℃/min升温至750℃恒温15~20h，可得I(003)/I(104)峰比值1~1.1，R-factor I(006+I(102)/I(101)峰比值0.67~0.94，并且有(108)与(110)的分裂峰，同时c/a比值4.914~4.925，属于R3m空间群的锂镍镁氧化合物。

Under the optimal combination of the three factors and three levels many clear, proper length and well-scattered metaphase chromosomes could be obtained.

并可获得大量图象清晰、长度适中、分散良好的中期分裂相，是皱纹盘鲍活体倍性检测的最佳方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐