查询词典 trivalent

Thress homologous chromosomes of trisomics associated as a trivalent or a bivalent and a univalent or three univalent during diakinesis and metaphase 1 ;Laggard chromosome and univalent separated in advance at anaphase I ,leading to distribution of 10-1-10,9-12,11-11,10-2-10,10-12,10-10,9-1-11 besides 10-ll;And there was distribution of 11-11-10-10, 10-10-10-12, 10-10-10-11, 10-11-11-11, 11-11-10-9, 10-10-10-10, 9-12-10-10, 9-9-11-11, 11-10-10-9, 12-10-9-11, 11-9-9-13, 10-10-10-9 at anaphase II ;n l microspore frequency were different of four trisomics.

三体在终变期和中期Ⅰ，3个同源染色体联会成三价体，或2个联会成二价体和1个单价体，或3个都为单价体；后期Ⅰ出现落后染色体或单价体提前分离，导致除10-11式分离外，还有10-1-10，9-12，11-11，10-2-10，10-12，10-10，9-1-11等不均衡分离方式；后期Ⅱ有11-11-10-10，10-10-10-12，10-10-10-11，10-11-11-11，11-11-10-9，10-10-10-10，9-12-10-10，9-9-11-11，11-10-10-9，12-10-9-11，11-9-9-13，10-10-10-9等分离方式；4个三体中的n 1小孢子频率不同。

We has discussed the mechanism of the trivalent synaptic adjustment,and it's important use to control the chiasmata and disjunction of the chromosomes.

本文对此三价体的联会调节机制及其对控制染色体交叉重组和染色体分离所起的重要作用进行了讨论。

Our experiment is unique to clone porcine IL-4 gene from lymphocytes of the local species of Chenghua porcine and systematically study its expressing effect in vivo on the immune system and immune responses of mouse and pig to trivalent vaccines against Swine fever, the Pasteurellosis and Erysipelas suis and pig paratyphoid vaccine.

将得到的序列在GenBank和EMBL数据库中进行了同源比较，结果表明它与来源于长白猪肠粘膜固有层淋巴细胞的白细胞介素-4有99％同源，与来源于杂交猪T细胞的白介素-4有96％同源，说明猪种及组织细胞来源的不同可能使基因有一定的差异。

The result showed that the one-valence cationsaccelerate the hydration process of α-hemihydrate gypsum greatly because they improvethe dispersed degree of α-hemihydrate gypsum particles due to the remarkable effect ofincreasing theζpotential; the effects of bivalent and trivalent cations on ζpotentialdecrease in turn, compared with monovalent cations, the effects on both the disperseddegree of α-hemihydrate gypsum particles and the setting time of paste are little.

研究还表明：由于一价阳离子能较大程度地提高石膏浆体的ζ电位，因而有效地提高了石膏颗粒的分散程度，对α半水石膏的水化加速作用很大，而二、三价离子对石膏浆体的ζ电位影响依次减小，对半水石膏颗粒的分散程度和浆体凝结时间的影响均不如一价阳离子作用大。

In the same central heteroatom systems, the redox reactivity of the systems substituted by the trivalent metal is higher than the systems substituted by bivalent metal.

在中心原子相同的体系中，三价金属取代的体系比二价金属取代的体系氧化还原能力强。

A soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process.

一种软质的黄白色三价金属元素，稀土属，能通过离子交换过程从氟碳锑矿或独居石中重新获取。

A yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium .

一种稀土属黄色多价元素，与铈、镧、镨共生于独居石和氟碳锑矿中。

Adding a certain amount of monovalent and trivalent cations is essential for improving ZnO varistors's characteristics.

一价离子、三价离子以及其它氧化物掺杂改性对于获得高性能压敏电阻也十分关键。

On all existing drawings, the passivate color call-out is no longer valid or required when changing to trivalent systems with the exception of black.

在现有所有图纸中，除了黑色以外，当转变为三价系统，钝化层的集中颜色不再有效或需要。

Several trivalent (boron, aluminium, iron, arsenic and antimony) and tetravalent metal/non-metal derivatives of N-(2-methyl) phenylglycine have been prepared by the interaction of their corresponding isopropoxide with the latter in 1:1 and 1:2 molar ratios in benzene medium.

用N-(2-甲基)苯基甘氨酸合成了几种及四价金属/非金属衍生物。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。