配对

By using several thousands of point vortices and small space mesh, we obtain the large scale discrete vortices on the vortex sheet as result of the pairing of small point vortices, thus simulate the instability phenomena of the rolling-up vortex sheet.

由于使用了数千个点涡和较小的空间网格，获得了前缘涡层小涡配对出现的较大的离散涡，模拟了紧卷涡层的不稳定现象。

Matching, multiple-choice, true-false questions, essay and fill-in-the-blank.

配对题、选择题、是非题、问答题和填充题。

In addition, the Pro-AM series features professional charging capabilities like Delta Peak cut-off, trickle charge and pulse charge method.

此外，配对系列的特色专业充电能力像三角洲山顶停产，涓流充电和脉冲充电的方法。

Leaves 3 or 4 per ultimate branch; sheath straw-colored, glabrous; auricles and oral setae absent; ligule purple-red, ca. 2 mm; pseudopetiole ca. 2 mm; blade elliptic-lanceolate, 4–20 × 2–2.9 cm, secondary veins 4–8-paired, base cuneate, margin serrulate, apex acuminate.

每末级的分枝留下3或4；鞘稻草色，无毛；叶耳和口头的刚毛无；叶舌紫红色，约2毫米；假梗约2毫米；叶片椭圆状披针形， 4-20 * 2-2.9 厘米，次脉4-8配对，基部楔形，边缘有细锯齿，先端渐尖。

METHODS: 8 curved artificial root canals were prepared with stainless steel K files by the step-back technique, the root canals were digitally photographed, the images were analysed by the software Image-Pro Plus, the shapes and positions of the root canals were measured and analysed. SPSS10.0 software package was used for statistical analysis, paired-samples t test was used to compare the difference of the means among sample groups.

使用手用不锈钢K锉，按逐步后退法预备8个弯曲人工根管，根管预备过程中对根管及根尖孔进行微距摄影，用图像分析软件Image-Pro Plus对根管的形态与位置变化进行测量、分析；实验数据采用SPSS10.0统计软件包进行统计学分析，选用配对t检验比较组间差异。

We used a single-cell model for human ventricular myocytes and also coupled-cell models composed of BP and NP cells.

我们用了一个人类心室肌细胞的单细胞模型和由BP和NP细胞组成的配对细胞模型。

S pecial zones for shoe materials, shoe machinery, leather, kids' shoes, brand shoes and stock shoes were set up to facilitate buyers' visit and the matching between buyers and exhibitors.

本届展会特设鞋材、鞋机、皮革、童鞋、品牌鞋、库存鞋等专区，以方便买家参观採购，并促进买家与展商的配对。

Through a great number of experiments, the paper put forward to shear test index of graded broken stone with self-invented instrument, analyzes its influence rule by varying gradation, water content, compactness, shear rate and lateral compression; studies systematically the changing rule of CBR, infiltration index and thermal conductivity by gradation; works out the suitable biggest particle size, key screen openings and range of their reasonable percentage passing; put forward to graded broken stone design methodology based on CBR and shear strength and construction method in perennially frozen soil zone.

本文通过大量试验，利用自行研发设备，提出了级配碎石的抗剪切性能指标，分析了级配、含水量、密实度、剪切速率、侧压力对抗剪切性能的影响规律；系统研究了级配对CBR值、渗水性能、导热性能的影响规律；通过CBR试验和抗剪切试验，得到了最佳级配最大粒径和关键筛孔及其通过率合理变化范围；提出了基于CBR值和剪切强度双指标控制的级配碎石组成设计方法及适宜多年冻土地区的施工工艺。

Sea dragon "pregnancies" in captivity are rare because researchers don't know what gets them in the mood to mate.

所知的信息中海龙怀孕的还比较少见因为研究人员还不清楚是什么吸引它们配对的。

Because accurate post fit is important to maximize both retention and support, the screw post should be used with the matched post/reamer syste; and accurate contrangle drilling should be maintained.

由于根柱和根柱孔的精密吻合，对于固位及力量传递的支持有重要的影响，因此打桩时要精确做到根柱孔的乡钻制，对于偏斜的弯机要避免使用，而且要选用同号组合配对的钻针。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！