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First, we deduce theoretical formulae of calculating equivalent dielectric constant and resonance frequency of rectangular microstrip antennas with air gaps from electromagnetic field theory based on the modified theory of cavity model. Then, we discusses the radiant principle of microstrip antennas on the base of transmission line theory and analyzes the problem of air gaps how to influence pattern and other idiocratic parameters of a microstrip antenna in detail.

本论文的主要工作是根据修改的微带天线的腔模理论，利用电磁场理论推导了具有空气隙的矩形微带天线的等效介电常数和谐振频率的理论计算公式，同时以传输线理论为基础，论述了微带天线的辐射原理。

Methods: 62 cases with anterior deep overbite were treated with a modified appliance which was composed of four parts-the anterior bite plate,the anchorage on the second molars,the rectangular wire with higher elasticity and intermaxilla traction.

该矫治方法由前牙平导板、高弹性方弓丝、第二磨牙设计支抗、后牙颌间垂直牵引等组成。结果：经临床应用2 年，共62 例，效果良好。平均疗程4 个月。

With the assumption that reinforced concrete was perfectly rigid-plastic,a kinematically admissible failure mechanism suitable for the shear failure of rectangular beams was presented and based on which theoretical calculation formulas were derived.

视钢筋混凝土梁为理想刚塑性体，提出了矩形截面梁剪切破坏时的破坏机构，以该机构为基础，推导得出了理论计算公式。

The planned wingtip Loral ARI.18240/1 ESM pods were added later, these requiring larger rectangular finlets.

后来该型号的翼尖上加装了&劳拉& ARI.18240/1电子支援吊舱，相应采用了更大的腹鳍。

It consists of four rectangular halls containing a total of 34 columns decorated with images of ancient Egyptian deities, including Horus, Hathor, Tefnut, Montu, and Renenutet.

神庙内有4间长方形大厅，厅内石柱共34根，都用古埃及诸神画面装饰，包括荷鲁斯，哈托尔，泰芙努特，蒙图，和热奈努泰特。

In this dissertation, considering the influence of transverse shearing deflection and noncoincidence of torsion center and gravity center, the equilibrium formulas of variable-curvature box-girder with rectangular cross section were established. Based on deformation expression of arbitrary point on the girder and relationship between inner forces and displacement equations, considering noncoincidence of torsional center and gravity center, the governing differential equations for variable-curvature box-girders were generalized.

针对具有竖直对称轴的矩形断面变曲率箱梁，考虑了挠曲剪切应变和曲梁剪心和形心分离的影响，推导了变曲率箱梁的平衡方程；通过箱梁内任一点的位移方程和内力-位移关系，推导了考虑曲梁剪心和形心分离的变曲率箱梁的挠曲扭转控制微分方程。

F transverse shearing deflection and noncoincidence of torsion center and gravity center, the equilibrium formulas of variable-curvature box-girder with rectangular cross section were established.

Hy4vO mf0 曲线箱形梁桥具有抗扭刚度大、经济性好、外形美观等优点，是高速公路立交匝道、城市高架桥常用的结构型式。

The clipping area can be rectangular or nonrectangular, generally specified as a region or a path.

剪裁区域可以是规则的或不规则的，通常指定为区域或路径。

From the angle of a beam-forming, the cross- range focusing principle of the synthetic-aperture radar based on nonsinusoidal waves is studied. The expressions of antenna pattern for both rectangular signa l and Gaussian signal are presented. Compared with the conventional narrow bandw idth SAR whose cross-rang resolution is determined by the carrier frequency, th e cross-range resolution of the nonsinusoidal SAR is affected by the signal ban dwidth.

为研究非正弦波SAR的方位向分辨力，从波束形成的角度分析了非正弦波SAR的方位向聚焦原理，导出了基于矩形脉冲和高斯脉冲的合成孔径天线阵列方向图表达式，并与常规窄带SAR进行比较，指出影响非正弦波SAR方位向分辨力的主要因素为合成孔径长度和信号带宽，而与信号载频无关。

Results The rectangular stemwith longitudinal groove,surface of leaf with fovea,odor acroma were the key identical characters of Ocimum basilicum L.

结果 九层塔的茎近方形，有纵沟纹、叶片表面有凹点，气味芳香。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样