查询词典 two pairs

SIFT（Scale Invariant Feature Transform） local feature is chosen because of its scale invariance and the property of accurate key-point localization.The Euclidean distance between different SIFT feature vectors is defined as the measure of similarity to get the pre-matched key-point pairs.The affine transform model is used to realize the registration.In order to get the accurate affine transform parameter,the principal of affine transform error is used to get rid of mismatched key-point pairs from the pre-matched pairs.

该方法选取具有良好尺度、旋转不变性以及精确特征点定位能力的SIFT局部特征，使用其特征向量间的欧氏距离作为相似性度量进行特征点匹配，并依据仿射变换误差准则去除奇异匹配特征点对，采用仿射变换的几何模型，实现了遥感图像的快速自动配准。

On this foundation, the followingfew problems are resolved. Firstly, we have a kinematic density formula for pairs of needles by using thekinematic density formula for pairs of oriented lines. The geometric probability thatthe random pairs of needles intersect at a point in convex body K is considered.

在此基础上，重点解决了以下几个问题：首先利用R~2上有向直线偶的运动不变密度公式，得到了针偶的运动不变密度公式，考虑了针偶与凸体K相交且针偶的交点属于K的这样一个几何概率问题。

Inflorescence terminal, usually of digitate, subdigitate, or corymbiform racemes, infrequently paniculate; racemes shortly pedunculate, composed of several spikelet pairs (if paniculate, more than 8 spikelet pairs present), basal homogamous spikelet pairs absent; rachis internodes and pedicels slender with a median translucent stripe between thickened margins.

通常是指状，subdigitate，或伞房花序状的总状花序的花序顶生，很少发生圆锥状；总状花序有短花序梗，由组成数个对(如果圆锥状，超过对宿存8小穗)，无的基部同性花小穗对；节间的轴和有在加厚的边之间的一个中间的半透明的条纹的花梗纤细。

Inflorescences terminal and axillary, racemes subdigitate or axillary racemes sometimes solitary, spathate; racemes bearing pairs of unisexual awnless spikelets, female and male spikelets separated into different zones, axis fragile, especially in female zone; lateral racemes of digitate cluster entirely staminate, terminal raceme and solitary axillary racemes mixed, usually sterile spikelet pairs at base, then a zone with female sessile and sterile pedicelled spikelets, distally both spikelets of a pair staminate, uppermost spikelet pairs sterile.

花序顶生和腋生，总状花序或腋生总状花序有时单生，；总状花序着生单性awnless小穗，女性和男小穗分成不同区域，脆的轴，特别是女区域；侧总状花序的完全雄蕊花的指状簇生，顶生总状花序和单生总状花序混合，通常不育对在基部，一女的区域具无梗和不育pedicelled小穗，一雄蕊花的对，不育的最上部的小穗对的两小穗的上部的然后。

Methods Fifty pairs of fresh colorectal cancer and homologous normal tissues were genotyped with Identifiler Kit and the mutations generated in cancer tissues were determined. The mutation rates, the numbers of locus matched without identical allele (A0), 1 identical allele (A1), or 2 identical alleles (A2) and the number of total identical alleles IA(subscript n were calculated. Frequency distributions of A0, A1, A2 and IA were compared among CR-N group, unrelated individual pairs and full sibling pairs. Discrimination functions were established for individual identification from tumor tissues with discriminatory analysis.

用Identifiler系统对50对新鲜结直肠癌组织及其身源正常组织组进行STR分型，计算CR-N组中变异STR基因座及全不同基因座数(A0)、半相同基因座数(A1)、全相同基因座数(A2)和共有等位基因数IA(下标 n，比较CR-N组、无关个体对组和全同胞对组中上述参数的分布差异，通过判别分析建立判别函数。

Racemes linear, dense, spikelets imbricate, 1 to several pairs of homogamous spikelets at base of raceme below fertile pairs, fragile between fertile pairs; internodes and pedicels reduced to short oblique stumps obscured by hairs from backside of sessile spikelet callus.

线形，紧密的总状花序，覆瓦状，同性花的1到数个小穗在总状花序基部在下面能育对，在能育对之间脆；缺乏的节间和花梗退化至从无柄的小穗结茧的屁股头发遮蔽的斜的残干。

We introduce the notion of characteristic pairs and give the definition of dual characteristic pairs of Dirac structures on Lie bialgebroids. Using the dual characteristic pairs, we give the if and only if conditions for which a maximally isotropic subbundle of the double of a Lie bialgebroid is a Dirac structure.

本文在李双代数胚上，引入了Dirac结构的特征对并给出对偶特征对的概念，利用对偶特征对，给出李双代数胚double的极大迷向子丛是Dirac结构的充要条件；其次，分别利用特征对与对偶特征对，将可约Dirac结构分为第一类可约与第二类可约，在此基础上，建立Poisson流形的两类对应约化定理。

The karyotype contains 12 pairs of metacentric, 3 pairs of submetacentirc and 4 pairs of subtelocentric chromosomes. There is no telocentric chromosome at all.

绢丝丽蚌的二倍体数目2n=38，核型公式为2n=24m+6sm+8st，NF=68，其中中部染色体12对，亚中部染色体3对，亚端部染色体4对，没有端部染色体。

A total of 16 pairs of digenic interactions were detected including 4 pairs under drought stress with a total contribution of 18.57% and 12 pairs under normal conditions that accounted for 38.49% of the total.

检测到显著互作效应位点16对：其中干旱处理下有4对显著互作，联合贡献率为18.57%；正常供水下有12对显著互作，联合贡献率达38.49%。

Methods The study population consisted of 180 pairs of twin girls aged 6 to 18 of whom.132 pairs monozygotic twins and 48 pairs dizygotic twins,who were all from Qingdao city of Shandong province.

以学校登记为基础募集6～18岁女性双生子180对，其中同卵双生子132对，异卵双生子48对，按Tanner标准进行青春发育分期，放免法测定空腹血清雌二醇(E2)和睾酮浓度。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。