查询词典 directional

A half-bridge bi-directional current mode high frequency inverter was proposed, and the problem of unequal voltage of capacitance in this circuit can be resolved by adding a balance coil.

提出了半桥双向电流源高频链逆变器的拓扑结构，并对电路固有的电容电压不平衡问题提出了解决方法，采用平衡绕组可以彻底解决电容电压不平衡。

Firstly this paper analyses and compares to the methods of target tracking and telemetry in common use, selects and uses the telemetry system that called'reversed GPS', aiming at the difficulties and challenge of ball cartridge examination and reclaim in these circs that the falling point distribution is random and wide extension, or deviates from the Hpredetermined ballistic trajectory and falling on the midway because of multi-target and long-distance aviation in experimental aviation based on traditional radio directional bearing.

结合课题研究背景，本文首先分析和比较了目前常用目标跟踪和定位方法的优缺点以及针对传统无线电定位技术在做飞行测试试验时由于目标飞行距离远、目标数量多导致的目标落点随机散布、范围广和偏离预定弹道、中途坠落等情况下给实弹试验测试和试验弹回收带来的困难与挑战，选用了&倒GPS&遥测系统作为测试测量方案。

High frequency emergency lighting apparatus for telecommunication power system is proposed in this paper. The proposed circuit configuration comprises an electronic ballast, a line voltage detector, and a charger/discharger. To compact the system structure and raise the efficiency, the class E inverter and bi-directional converter are employed, respectively.

本文中主要提出一种应用於电信电源供应系统之高频紧急照明装置，所提之架构包括采用E类换流器为主电路之电子安定器、市电侦测电路及单级双向充放电电路，其主要特徵是电路简单、维修容易且具高效能。

It can be used in the tracking system of a mobile satellite communication system to make the beam of the directional antenna on a vehicle point to the satel...

该系统能消除载体的变速运动对输出航姿角的影响，结构简单、紧凑，成本较低，可用于定向性移动卫星通信天线跟踪卫星的开环控制系统中。

Artificial selection is a kind of directional selection, the results can produce different biological species.

人工选择是一种定向选择，结果可产生不同的生物品种。

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。

Urban areas ; directional brightness temperature ; classification ; modeling

城市；方向亮度温度；分类；模型

The simulation results can play a directional role in the new design of gas burner.

模拟结果对于新型气体燃烧器的设计具有指导意义。

The histamine in the particles will increase the transmission capacity of capillary and the velocity of the tissue-fluid flow and the superficial shear stress of related mast cell will be increased, which will once again activate mast cells to discharge active substance. Part of the active substance will be absorbed by capillary and the other part will be passed by tissue fluid to a remote place and it will activate the mast cells and the capillaries there. The directional path of the tissue fluid is approximately the same as the meridian, which forms the phenomenon of feeling-along-meridian on macroscale.

脱颗中的组胺等物质会引起毛细血管壁通透性的增加，进而引起组织液流动速度的增加和肥大细胞表面的切应力加大，这样会进一步促进肥大细胞的激活，从而释放更多的活性物质，这些物质一部分被静脉端毛细血管吸收进入血液，另一部分则随着组织液的定向流动向远处，并进一步刺激远处的毛细血管和肥大细胞，而组织液的定向流动途径和传统的经络线走向基本吻合，在宏观上就构成了循经感传现象。

The characters of directional blasting for demolishing the 120m chimney in Heshan Power Plant are that the toppling range is narrow （ a sector of +8 angle ）, the chimney's inner structure is not symmetrical in the toppling direction, the body's construction quality is relatively poor, and the engineering is very difficult with high risk.

广西合山电厂120m 烟囱定向爆破拆除的特点为倾倒方向范围狭窄（仅+8 扇形区），烟囱内部结构不对称于倾倒方向线，烟囱筒体施工质量较差，工程难度大、风险高。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失