双位

Methods The characteristics of soft and hard tissues of 15 patients were analyzed by studying lateral cephalometric radiographs and plaster model,then the mechanism of malocclusion was probed and the scheme of treatment was formulated,the malocclusion was treated by edgewise appliance after extracting bilateral maxillary first bicuspids.

15名患者通过头颅定位侧位片与记存模型，分析硬组织指标、软组织面型特征，探讨错牙合机制，制定矫治方案，减数拔除双侧上颌第一双尖牙齿，采用方丝弓矫治器进行矫治。

It should be stressed that the strange attractor can exist in optical bistability, and whether the atomic coherences and classical field can inhibit chaos depends on the laser frequency.

在双稳态运转下，光场位相为π的偶数倍或奇数倍，使光场稳定于正值和负值，故体系出现对称双稳态对，但无混沌状态。

By utilizing three benezenemulticarboxylate derivatives (H2chdc, H2aip, NaH2sip), we obtain 12 coordination polymers. Especially, compelexes 1 and 2 are based on one-dimensional ···OHInOHIn···chains as building units, while complex 3 is based on double four-ring [In8(μ2-O)4(μ2-H2O)8]16+, complex 4 is based on trinuclear In3(μ3-O)(CO2)6, complexes 11 and 12 are both based on nested bistranded helices.

选择了三类取代苯羧酸配体： 2，5-二羟基-1，4-对苯二甲酸(2，5-H2chdc)； 5-氨基间苯二甲酸(5-H2aip)； 5-磺酸基间苯二甲酸钠盐(5-NaH2sip)和InCl3反应合成了十二个配位化合物：其中1、2以···OHInOHIn···链为构筑单元， 3以双四元环[In8(μ2-O)4(μ2-H2O)8]16+为构筑单元，4以棱柱状三核铟In3(μ3-O)(CO2)6为构筑单元，而11、12以嵌套的双股螺旋链为构筑单元。

In a placebo-controlled double-blind study in 10 healthy volunteers standardized subcutaneous haematomas were induced in both thighs by injection of autologous blood with an addition of 125l-fibrinogen (Larsson et al.).

在一安慰剂对照的双盲研究中，将加有1251标记的纤维蛋白原的自体血液注射入10位健康志愿者的双腿部，造成标准皮下血肿。

In order to magnificently cause this to be grand, at that time Germanrenowned sculptor Gottfried Sha Duoyou has designed a set of bronzedecorations statue for this peak: Four speed along the steed pulls adouble round combat tank, on the combat tank is standing a back toinsert the double wing the goddess, her holds a stick portable bridle,Prussia which spreads the wings to want to fly flies the hawk vultureto stand on the decorated with bay garland power stick which thegoddess holds.Mounts sand multi- creations 20 in on various channels inside cliff todescribe in the ancient Greek mythology the Titan missile sea standardto pull the heroic fact the marble relief picture.

为使此门更辉煌壮丽，当时德国著名的雕塑家戈特弗里德·沙多又为此门顶端设计了一套青铜装饰雕像：四匹飞驰的骏马拉着一辆双轮战车，战车上站着一位背插双翅的女神，她一手执杖一手提辔，一只展翅欲飞的普鲁士飞鹰鹫立在女神手执的饰有月桂花环的权杖上。

Nowadays, it has been extensively accepted that the double exchange interaction plays a key role in perovskite manganites. Therefore, in this thesis the effect of the double exchange is studied by doping on Mn sites.

目前，普遍认为双交换作用对钙钛矿结构氧化物中存在的CMR效应起到非常重要的作用，因而本论文通过对Mn位的元素替代来考察掺杂后对双交换作用的影响。

In the protanopes,the shorter latencies of N1 ,P1,N2 and greater amplitudes of N1-P1,P1-N2 appeared in 520~530nm and 570nm,forming the two-thoughs and two-peaks shapes,with the shortest latencies and the greatest amplitudes in 520~530nm.

先天性红色盲则分别在520~530nm和570nm处潜伏期较短而振幅较大，形成双谷样和双峰样改变；最短潜伏期和最大振幅位地520~530nm处。

Firstly, within the framework of Di-Nuclear System Model, the formation probability of SHE by means of nucleons transfer after the formation of the DNS configuration is studied.

首先，我们在双核模型的框架内，研究了重离子核反应中能越过入射道位垒形成双核系统后，通过核子转移而生成复合核的几率。

Based on the instantaneous motion of the moving platforms, the uncertainty configuration conditions and simplified uncertainty configuration equations are obtained for the widely studied parallel manipulators, such as planar 3-DOF parallel manipulator, spherical 3-DOF parallel manipulator, 6-SPS triangular platform parallel manipulator, three-branch 6-DOF parallel manipulator, twotriangular-platform parallel manipulator, DELTA parallel manipulator, 5-DOF parallel manipulator, two-tetragonal-platform parallel manipulator, pentagonal platform parallel manipulator and Stewart platform parallel manipulator.

采用这一方法，根据国内外常用的并联机器人机构的形式，建立了平面3自由度并联机器人、球面3自由度并联机器人、三角平台并联机器人、三支链6自由度并联机器人、双三角平台并联机器人、DELTA并联机器人、5自由度并联机器人、双四角平台并联机器人、五角平台并联机器人和Stewart平台并联机器人的奇异位形条件方程，除了Stewart平台并联机器人外，这些条件方程均为低于6阶的行列式，机器人结构类型不同，其简化程度各不相同。

The main products are as follows:semi-automatic two-post glass printer,automatic two-post glass printer,pneumatic screen printer,electrical screen printer, vision registration screen printer with high accuracy,PCB screen printer, automatic self-integrated exposure unit,emulsion coating machine,compact squeegee grinder,stencil dryer , mechanical stretching machine etc.

公司主要产品有：双柱式半自动、全自动系列玻璃印刷机，气动、电动式双柱大、中、小型精密丝印机，视像对位精密丝印机，线路板多用丝印机；自动精密晒版机、自动网版涂布机、磨胶刮机、烘版箱、机械式拉网机等相关设备。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。