定向器

Compared to traditional method,this approach replaced tuning capac-itor with PIN diodes,made use of its characteristics of variable impedance to adjust the impedance through the bias voltage to achieve the autotuning of directivity.

与传统方法相比，该方法采用PIN型二极管代替调节电容，利用其阻抗可变特性，通过偏置电压来调节匹配阻抗，最终实现定向耦合器的自动方向性调节。

Objective To study the clinic application of one-way skin expander in treating faciocervical scar.

目的：探讨定向扩张器在治疗面颈部瘢痕中的临床应用。

Methods 48 patients with faciocervical scars treated by one-way skin expander in our department from 2000 to 2004 were reviewed retrospectively.

回顾性分析我科2000年至2004年用定向扩张器治疗48例面颈部瘢痕患者。

According to the results, despite ciliature base-associated microtubules of hypotrichous ciliates have a basic structural component, the composition, differentiation characteristics, location and orientation, level of development are different.

据结果推测，尽管腹毛目纤毛虫的纤毛器基部微管具有相同的结构成分，但其结构的组成、分化特征、定位和定向、发达程度等均有差异。

General solution to directional coupler with coupling between neighbored waveguide only.

仅有相邻波导耦合的定向耦合器的一般解法。

In order to extending the bandwidth of a GNRD coupler, unsymmetric coupled GNRD waveguides is proposed.

第五章根据第四章的理论结果，分析设计了带有弯曲过渡段的GNRD波导定向耦合器。

The method is to draw incident power and reflection power of radar system through directional coupler and bridge circuit,and carries out pretreatment for gathered data with micro control unit,then calculates standing wave ratio.

文中提出一种驻波比在线测试方法，该方法通过定向耦合器和电桥电路将雷达系统的入射功率和反射功率提取出来，然后用单片机对所采集到的数据进行预处理，从而计算出驻波比。

A self-made vacuum melting and argon shield continuous unidirectional solidification equipment was used to produce copper tube with continuous columnar structure.

采用自行研制的真空熔炼、氩气保护连续定向凝固设备制备出具有连续柱状晶组织的铜管铸坯，分析了铜管铸坯生产中熔体温度、连铸速度、冷却水量，结晶器等对其的影响。

The characteristics of the switching curves of Gaussian-Constant-Gaussian varying coupling coefficient nonlinear directional coupler are analyzed in detail.

研究了高斯常数高斯平滑连接的复合型变耦合系数定向耦合器的开关特性曲线。

The theory analysis and designing results of several kinds of coupling microstrip directional couplers are described in the paper.

论文中给出了多种微带线定向耦合器的理论分析和设计结果。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。