双心

The sample comprised 25 patients with the first premolar removed during orthodontic treatment. Digital models and lateral cephalometric records were taken pre- and post- treatment. We chose two kinds of regional superimposition methods on the digital models (One was the mesial zone of the third primary ruga and regional palatal vault, the other was the palate) and Baumrind's best-fit for cephalometric superimposition. The amounts of incisor and molar movement were measured and a comparative study was performed.

三。选择25例拔除上颌第一双尖牙正畸患者治疗前、后的上颌模型进行三维重建，分别使用第三腭皱近心端局部腭穹隆和腭部对同一患者治疗前、后的数字化模型进行局域重叠，以治疗前后头颅侧位片的 best-fit重叠为评价标准，比较三种方法之间的差异，对应用三维数字化牙颌模型纵向重叠评价正畸治疗前、后的牙齿移动进行探索性研究。

The optimal reconstruction windows of patients with stable HR(≤75 bpm and≥91 bpm) were concentrated in 71%,ranged from 65%-80%, and in 41%,ranged from 32%—50%,respectively.The prospectively ECG-gated DSCT coronary angiography can be used in patients with stable HR(≤75 bpm and≥91 bpm) in abstract.②To explore the clinical application of prospectively ECG-gated transverse DSCT coronary angiography.Methods Two hundreds patients[Body mass index:23-25 kg/m~2,122 patients(average HR≤75 bpm),78 patients(average HR≥91 bpm)]with suspected or known coronary artery disease underwent prospectively ECG-gated transverse DSCT coronary angiography,among them,30 patients underwent selectively coronary angiography,grouping them into 2 groups according to the average HR of scanning.Group A(17 cases,HR≤75 bpm),group B(13 cases, HR≥91 bpm),the DSCTA results were compared with SCAG.Then,calculate the accuracy of patients in each group and evaluate the agreement of accuracy between DSCTCA and SCAG by Kappa statistics.

方法回顾性分析200例行适应性前瞻性心电门控双源CT冠状动脉血管成像的患者(排除扫描过程中，屏气配合差，出现心律不齐的患者及行支架置入或搭桥术后复查的患者)，包括屏气时平均HR≤75 bpm患者122例，HR≥91 bpm患者78例；其中30例同期行选择性冠状动脉血管造影，按屏气时HR将其分为2组，A组17例：HR≤75 bpm，B组13例：HR≥91 bpm，分别与金标准SCAG对照，计算2组患者的阳性诊断准确率，应用SPSS 13.0统计学软件，利用Kappa检验比较每组患者的2种诊断方法诊断结果的一致性，利用两样本率x~2检验，比较2个心率组间的诊断准确率有无明显统计学差异，并计算此30例患者的平均有效辐射剂量。

Schizocarp A dry fruit, formed from two or more carpels, that divides at maturity into one-seeded achenelike segments termed mericarps.

分果：干果的一种类型，由二个至多个心皮合生形成。在果实成熟期可以分裂为含有单个种子的类似瘦果的部分，称其为双悬果。

L Using dual-hydraulic self-centering clamps clamp the workpiece, the two central hole coaxial with high precision.

l 采用双自定心液压夹具夹持工件，两中心孔同轴精度高。

And there are the chasty shone archway,the lotus pond,the sexangle summerhouse,the bronze lover status,the Cupid's hands,the love wreath,the tablet—the record of love valley,the cherry blossom ,the honeysuckle and the sweet osmanthus ,etc.in the park.And all these make up of the beautiful sightseeing.

园内气势恢宏的贞洁牌坊、葱郁的荷塘、挺拔的六角亭、黄永玉先生亲自精心设计制作的青铜情侣雕塑、爱神双手、象征着永恒的爱情花环以及其亲笔手书的祭文《爱谷纪事》碑墙、"爱情如一环，此环无终极"和"爱谷"匾额、素洁的樱花、飘香的金银双桂，由心和蝴蝶图案组成的绿化环境，合成爱谷景园独特景观。

Top of the shent installed bearings,double row bearings used foe heart roller bearings and cylindrical roller bearings separate,fixed plate and motor bearings of the stent, support plate,connected to V-belt drive.

支架上端安装轴承体，轴承采用双列滚子调心轴承和单列圆柱滚子轴承，电机固定板与轴承体支架、支撑板连接在一起，三角带传动。

The biaxial molecules interact via dispersion forces and the molecular centres of mass are located at the sites of a simple cubic lattice.

双轴分子通过色散力作用，使分子质心固定在简单立方晶格的格点上。

Approximately in half benchmarks this dual core CPU with micro-architecture netBurst shows lower speed than our single core hero.

大约有一半的基准，这双核心CPU与微观建筑导体显示较低的速度比单核心英雄。

Every rockery beside him is crashed and the shatters of stone fly around to cover Zen's sight.

果然童博只是用手拿著箭装作受伤，此时他双眉一轩，突然回身向四面八方劈出，旁边的假山都被打碎，石屑纷飞，遮住了童战视线，童博立刻化身龙影向他撞去，在危急之际，童心扑上来推开了童战，可他自己却被龙影擦过，左臂立刻红肿，鲜血迸出，童战急忙扶住心，而童博正要回身再撞，一剑一带却向他攻来

The ovary of Phyllostachys praecox had one anatropous ovule. The crassinucellate ovule had diploid integuments. The monosporic embryo sac had one tetrad which turned on line and many antipodal cells. The synergid had the obvious filiform appratus.

3雷竹子房1室，内具1个倒生胚珠；双珠被，厚珠心；蓼型胚囊，单孢发育，线形大孢子四分体，具多个反足细胞，助细胞具明显丝状器。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。