双倍的

In young people, the l-z joints are quite strong, capable of supporting almost twice body weight.23 As aging occurs, the joints become weaker and more biplanar,transitioning from a largely coronal orientation to a more prominent sagittal positioning.

年轻人的 l-z 关节足够强大，可以支持2倍体重的重量。随着年龄增长，关节强度减弱，且多变为双平面，从大部分冠状位过度矢状位。

In the studies on transferring and identifying alien chro-mosomes into wheat,the combined use of mitotic and meioticchromosome N-banding is also successfully practiced in deter-mination of T.durum-H.villosa amphipoid,five wheatalien disomic additions with H.villosa chromosomes,〓〓,alien sulstitution line with chromosome 〓 andsome translocation lines.

在外源染色体导入、鉴定研究中，利用根尖有丝分裂中期染色体和花粉母细胞减数分裂中期Ⅰ染色体的N-分带，快速、准确地鉴定了硬粒小麦一簇毛麦双二倍体、普通小麦一簇毛麦异耐加系V〓、V〓、V〓、V〓和V〓，普通小麦一簇毛麦异代换系V〓以及一些具有易位的杂种后代。

The results showed that autote traploid rice might be effectively improved by ion beam bio-technique, from which the new germplasm with hereditable twin-embryo seedling could be selected.

结果表明，利用离子注入技术可以对同源四倍体水稻进行有效地改良，由此可以获得具有遗传变异特点的新种质，其双胚苗特性随着自交世代的推进而得到保持。

In this study,Amplified fragment length polymorphism analysis was carried out by using 23 pairs of EcoRI-NN/MseI-NNN selective primers in amplification of the DNAs from reciprocal F_1 hybrids of Cucumis hystrix Chakr.and C.

为了研究细胞质背景对基因组序列丢失的影响，利用23对Eco RI-NN/Mse I-NNN选择性引物对Cucumishystrix与栽培黄瓜C.sativus的正反交F_1、异源双二倍体及亲本DNA进行AFLP分析。

There is usually little or no progression, the EMG shows non-specific myopathic features and serum CK is normal or only slightly raised.1 The muscle biopsy may show characteristic ultrastructural abnormalities but these can be difficult to detect without specific histochemistry and/or electron microscopy that were not available in 1981 when our patient was biopsied.

查体提示：双侧眼睑下垂，易疲劳；轻度面部及颈部肌肉无力；舌肌无力并出现中央沟。无眼肌麻痹。肩部上肢带肌消瘦、明显无力，可见肩胛翼。腰部无力，行走时脊柱前凸，呈&鸭步&步态。坐位是如不用双手辅助，可能掉出椅子外。但可以依靠其脚趾和足跟站立。患者肺活量为正常的80%，心电图及超声心动图正常。CK水平为正常的2-3倍。

In the present study, the autotetraploid rice IR36-4X was treated with ion implantation technique by nitrogen ion beams and a polyembryonic seedling mutant (named as the IR36-Shuang) was identified in M2 generation. The mutant line was systematically investigated about the location of seedling in polyembryonic seedling, and the cytological initiation of the additional embryo in the 1R36-Shuang was observed and determined.

以低能氮离子束为诱变源，通过对同源四倍体水稻品系&IR36-4X&进行离子注入后在其第2代群体内筛选得到了1株具有多胚苗性状特征的突变株（IR36-双），对该突变株后代的多胚苗形态特征及其多胚来源进行了研究。

For example,α2-macroglobulin appears to have an alternative structure that consists of a tetrameric subunit linked via disulfide bridges.

例如，第二号甲型巨型球蛋白似乎拥有一个由双硫键所连结的四倍体次单元所组成的结构。

Veteran billiard player Johnny Archer struggled through some middle matches in the 10-Ball Desert Shoot-Out but roared back in the double-elimination finals to defeat Mika "Iceman" Immonen twice and take home the $12,500 first prize.

老桌球选手约翰尼阿彻奋斗，通过一些中等的比赛， 10球沙漠开枪，但轰鸣，早在双消除决赛中打败米卡&送冰& immonen的两倍，并带回家12500美元首奖。

Gays, lesbians and bisexuals are about twice as likely as heterosexuals to seek treatment for mental health issues or substance abuse.

男女同性恋者和双性恋者因为心理问题或滥用药物寻求治疗的几率是异性恋者的大约两倍。

The behavior of chromosomes at meiosis of PMC of 9 combination and selfed seed set of 16 combination of Triticum-Aegilopsamphidiploids were studied.

对小麦-山羊双二倍体9个组合的细胞遗传学和16个组合的自交结实率进行了观察。

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