查询词典 twinning

Use of a "cloning" procedure known as "artifical twinning" or "blastomere splitting" to create several genetically identical embryos from one, so long as the resulting embryos are experimented on and discarded instead of being transferred to the womb.

使用"克隆"程序称为"人工配对"或"卵裂球分裂"制造基因相同的胚胎数由一、只要是试行并导致胚胎被丢弃而不移送的子宫。

The County Council has hada twinning link with the Sichuan Province in China fornearly twenty years and this has opened up opportunities for Leicestershire businesses to trade in China.

莱斯特郡议会与中国的四川省拥有近20年的友好关系，这为莱斯特郡的企业与中国开展经贸交往创造了机会。

This research was important to understand the symmetry property on Dauphine and Brazil twinning of α-quartz and provided a useful method for the identification of the two kinds of twinning.

这一研究对认清α-石英道芬双晶和巴西双晶腐蚀像的对称关系，鉴定α-石英的双晶类型具有理论与实际意义。

Mechanical twinning is strongly grain size and texture dependance.

研究结果表明，镁合金在室温变形条件下，孪晶在变形的过程中发挥了重要的作用。

PCR-RFLP in FSHR gene 5'–flanking region with exon 1 digested by restriction endonuclease TaqⅠdemonstrated that the frequencies of allele A (0.5500) and genotype AA (0.5000) in twinning cows were higher than that of allele A (0.3500) and genotype AA (0.3000) in monovular cows for Qinchuan cattle, while The frequencies of allele B (0.5937) and genotype BB(0.6875) in twinning cows were higher than that of allele B (0.5416) and genotype BB (0.4167) in monovular cows for Holstein cattle. Key words: Bovine; Twinning; FSHR gene; PCR-RFLP

FSHR基因5'端（包括侧翼序列和第一外显子）的限制性内切酶TaqⅠ的PCR-RFLP标记研究发现，在秦川牛中双胎母牛的A基因频率（0.5500）和AA基因型频率（0.5000）分别高于单胎母牛的A基因频率（0.3500）和AA基因型频率（0.3000）；在黑白花奶牛中双胎母牛的B基因频率（0.5937）和BB基因型频率（0.6875）均高于单胎母牛的B基因频率（0.5416）和BB基因型频率（0.4167），也就是FSHR基因的5'端的PCR-RFLP标记在一个品种内单胎母牛和双胎母牛之间有一定趋势，但两个品种的趋势不同。

On the rhombohedron face {1011}, Dauphine twinning showed different shapes of etching pits between individuals, because rhombohedron positive form {1011} and negative form {0111} appeared on both sides of twin partition line, while Brazil twinning showed symmetry plane between the irregular triangle etching pits of individuals. On the trigonal prism section 11(average20, Dauphine twinning showed different shapes of etching pits between individuals, because trigonal prism positive form {1120} and negative form {2110} appeared on both sides of twin partition line, while Brazil twinning should show symmetry plane between the ellipse or quadrilateral etching pits of individuals, which was not observed.

菱面体{1010}面上存在道芬双晶处，道芬双晶双晶缝合线两端分别是菱面体正形、菱面体负形出露处，导致蚀坑形状不同；菱面体{1011}面上存在巴西双晶处，不规则三角形蚀坑形态的方位关系为对称面关系；三方柱切面{1120}面上存在道芬双晶处，道芬双晶双晶缝合线两端分别是三方柱正形、三方柱负形出露处，导致蚀坑形状不同；三方柱切面{1120}面上存在巴西双晶处，椭圆形或四边形蚀坑方位应为对称面关系，但实验中未见到。

The experimental results show that deformation twinning is dependent on both temperature and strain rate. The density of deformation twinning increases with increasing test strain rate. However, it decreases with increasing test temperature.

结果表明，孪晶变形与温度和应变率有着明显的相关性，其密度随着应变率的增加而增大，随着温度的升高而锐减。

Different genotypes were determined in Luxi monotocous cows, Luxi twinning cows, Chinese Simmental cows, Angus cows and Simmental×Mongolia cows by restriction fragment length polymorphism. The value of polymorphism information content indicated that this was a moderate polymorphism in Luxi monotocous cows and Luxi twinning cows.

运用PCR-RFLP法验证并分析该位点在鲁西牛双胎群体和单胎群体及中国西门塔尔牛、安格斯牛和西蒙杂交牛单胎群体间的多态性，结果表明，在鲁西牛双胎和单胎群体中分布A、B两个等位基因，处于中度多态。

Many nanotwins were formed in this triangular region. HREM observations showed that nanotwinning dislocations were nucleated at noncoherent twin boundaries with the local stress concentration, and the nucleation is related to the dislocation dissociations at the boundary ledges. The proceeding of these nanotwins is the homogenous shears of 1/6 [11〓] twinning dislocations, which is that the trailing 1/6 [112] twinning dislocations repel the leading twinning dislocations to proceed in the (111) planes. Therefore, twinning dislocations at the twin tip appear to be on one side of twin, forming a noncoherent twin boundary with a semilenticular shape.

在此三角区域内发现许多纳米孪晶的存在，通过高分辨电镜手段观察到纳米孪晶中的孪生位错是在具有原位应力集中的非共格入射孪晶界上形核的，纳米孪晶的形核与界面的台阶位错及其位错分解反应有关，纳米孪晶的行进是1/6[11〓]孪生位错均匀切变机制，即每一个（111）孪生面上对应一个孪生位错，其中拖尾的1/6[11〓]孪生位错将会推动领先的孪生位错行进，于是在形变孪晶头部位置的孪生位错排列常常出现在形变孪晶的一侧界面，形成一个半透镜状的非共格孪晶界。

Many twinnings are produced during the process of AZ31 magnesium alloy deformation at room temperature, twinning deformation is the mainly deformation manner, and twinning increases with the deformation increase up to fracture.

AZ31镁合金室温下压缩产生大量孪晶，变形方式以孪生变形为主，且随着应变的逐步变大，孪晶明显增加直至断裂。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。