The initial boost phase is easiest to target, but requires extremely fast reaction times.
起始阶段容易锁定，但对反应时间的要求异常苛刻。
The trajectory was divided into boost phase and glide phase, which were optimized respectively and the optimal trajectory was obtained.
将再入航迹分为助推加速段和无动力滑翔段分别优化，从而得到优化航迹。
Chapter III studies tactical parameters estimation of boost phase and impact position prediction problems based on prior trajectory profile.
第三章研究了基于先验弹道模板的主动段战术参数估计与落点预报问题。
A key component of an air-launched missile defense system demonstrated its ability to acquire and track a ballistic missile target in the boost phase, according to Raytheon.
日前，一种空射导弹防御系统的关键组成部分成功演示了对助推段弹道导弹的截获与跟踪能力。
In phase one of Face-to-Face, BA selected nearly 1, 000 of 6, 000 applicants for one free roundtrip to a BA destination to help boost business.
在第一期的Face-to-Face项目中，英航在6000个申请者中挑选了近1000家公司，他们得到了一次英航所运营航线的免费往返旅行机会来帮助推进他们的业务。
During the base phase of building miles, it is the daily consistency of training over a period of weeks and months that will boost fat metabolism.
在累积里程数的最初阶段，要提升脂肪代谢率要每天密集的训练数周或数月。
The successful relocation phase to the Emirates is over, and with it the one-off boost from property income.
酋长球场已经成功搬迁了，他们必须将一次性的收入转变成长期增加。
In a given crisis and against a specific enemy, some sort of loitering boost-phase system could well make sense.
在危机已知，而且在针对某一特定敌人的情况下，某种处于上升阶段的寻飞系统是有意义的。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
The difference of output voltage of inverter and 220v is set as control signal, controller change the PWM signal to regulate buck-boost converter and three-phase rectifier.
以逆变器输出的电压和220v的差值作为控制信号。设计控制器根据控制信号改变直流变换器和三相可控整流的PWM控制信号。
Switching boost converter's load effect has great effect on input phase, stability of small signal, ratio of input and output impedance, and the ratio of Boost converter's output efficiency.
开关变换器的负载效应对变换器升压比、输出效率、输入相位差、小信号稳定度、输入与输出阻抗之比等有着非常重要的影响。
This paper describes the basic working principles and control methods of three-phase high- frequency boost & buck IGBT SPWM rectifiers.
文中介绍了IGBT升压与降压式三相高频SPWM整流器的基本工作原理和控制方法。
The article introduces the direct power control (DPC) principle and constitution for three-phase boost - type PWM rectifiers and analyses switching table.
介绍了三相电压型PWM整流器直接功率控制(DPC)系统的组成与原理，分析了开关表的形成机理。
The power supply USES BOOST converter for power factor correction and voltage regulation, and it converts DC to HF ac square wave with phase-shifted full bridge.
电源通过BOOST电路校正功率因数和调节电压，用移相全桥把直流电逆变成高频方波，然后经高频变压器升压后倍压整流得到直流高压。
The power supply USES BOOST converter for power factor correction and voltage regulation, and it converts DC to HF ac square wave with phase-shifted full bridge.
电源通过BOOST电路校正功率因数和调节电压，用移相全桥把直流电逆变成高频方波，然后经高频变压器升压后倍压整流得到直流高压。
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