矩形波

According to the field plot of TE10 wave mode in rectangular ridged waveguide,the equivalent capacitance and equivalent inductance are approximately calculated by quasi-static method,and the resonant frequency which is namely cutoff frequency is derived.

由矩形正脊波导中主模TE10波模的分布结构特征，用准静态方法近似的计算出等效电容和等效电感，从而计算出谐振频率，也就是矩形正脊波导的截止频率。

Water surface wave ; stationary wave ; rectangular water trough ; optical effect

由矩形水槽里水的表面波理论导出了驻波方程，并定量研究了标准矩形游泳池中的驻波现象，计算结果与实际现象基本符合。

Schematizing the southern Yellow sea as an constant water depth and semi-enclosed rectangular bay, the evolution trends of tidal amphidromic system of M2and variation features of coast tidal range are analyzed primary under the condition of 3 and 5 meter rise of sea level respectively.

将南黄海概化为一等深矩形海域，初步研究了在海平面上升 3m 和 5m 条件下该海域旋转潮波系统的演化趋势，继而分析了沿岸潮差变化特征。初应用海湾和半封闭矩形海域改进的 Taylor 问题的解研究海平面上升对 M2 分潮旋转潮波系统及沿岸潮差的变化。

Schematizing the southern Yellow sea as an constant water depth and semi-enclosed rectangular bay, the evolution trends of tidal amphidromic system of M2and variation features of coast tidal range are analyzed primary under the condition of 3 and 5 meter rise of sea level respectively.

将南黄海概化为一等深矩形海域，初步研究了在海平面上升 3m 和 5m 条件下该海域旋转潮波系统的演化趋势，继而分析了沿岸潮差变化特征。初步分析研；应用海湾和半封闭矩形海域改进的 Taylor 问题的解研究海平面上升对 M2 分潮旋转潮波系统及沿岸潮差的变化。

Schematizing the southern Yellow sea as an constant water depth and semi-enclosed rectangular bay, the evolution trends of tidal amphidromic system of M2and variation features of coast tidal range are analyzed primary under the condition of 3 and 5 meter rise of sea level respectively.

将南黄海概化为一等深矩形海疆，初阶研究了在海平面上升 3m 和 5m 前提下该海疆扭转潮波体系的演化趋势，继而剖析了沿岸潮差厘革特应用海湾和半封闭矩形海疆改造的 Taylor 题目的解研究海平面上升对 M2 分潮扭转潮波体系及沿岸潮差的厘革。

Schematizing the southern Yellow sea as an constant water depth and semi-enclosed rectangular bay, the evolution trends of tidal amphidromic system of M2and variation features of coast tidal range are analyzed primary under the condition of 3 and 5 meter rise of sea level respectively.

将南黄海概化为一等深矩形海域，初步研究了在海平面上升 3m 和 5m 条件下该海域旋转潮波系统的演化趋势，继而分析了沿岸潮差变化特征。初步分析研究表明：随着海平面上升，该海域 M2 分潮的无潮点有向东南方向偏移的趋势，受此影响，沿。。。应用海湾和半封闭矩形海域改进的 Taylor 问题的解研究海平面上升对 M2 分潮旋转潮波系统及沿岸潮差的变化。

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The spectrum of vertical rectangular-cylinder put up periodic zero counters which mark off quadrate areas,the values of counter in each areas alternately change between the plus and the minus,and with the increasing of wave number,the values of counter present attenuation character alike e exponent.

直立矩形柱体谱出现了周期性变化的零等值线，该等值线将非零等值线划分为a× b 个矩形区域，而且等值线值在各矩形型区域中正负交替变化，随着波数的增大，不同的矩型域中等值线值呈e指数衰减特征。

The proposed antenna consists of a rectangular metal patch on a printed circuit board fed by a 50- coplanar waveguide. By cutting a C-shaped slot in the rectangular radiating patch,a frequency band notch will be created. The proposed antenna yields an impedance bandwidth of 3.1-10.6GHz with VSWR,except the bandwidth of 5-6GHz for WLAN.

天线采用印刷电路板上的矩形贴片作为辐射单元，并由同一面上的共面波导馈电，通过在矩形贴片上开一个C形槽来实现陷波功能，电磁仿真软件Ansoft HFSS10的仿真结果显示，合适地选择C形槽的尺寸可以调整陷波的中心频率和带宽。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。