查询词典 turn on

In the half-turn throw, the knife is gripped by the blade and makes one half of a turn on its way to the target.

在半周旋转投掷时，握持刀刃，并使飞刀到达靶子之前做半周的旋转。

The phase switches of the proposed SRM converter turn on in zero voltage switchingmode by making use of a kind of parallel quasi resonant DC link circuit,and turn off in ZVS mode by adding a shunt-wound capacitance to every phase switch.

电路采用并联型准谐振直流环节为SRM相开关开通提供零电压条件，给相开关并联电容器则保证了相开关的零电压关断。

The harder you turn-on a power transistor, the longer it will take to turn off.

功率晶体管导通越快速，关断将越慢。

In the design of the power supply, the main circuit topology frame uses half-bridge series resonant switching and parallel load connection, in which, an IGBT is adopted as the power switches, and features high operation frequency, high output power and fast response. In addition, the IGBT in the switch mode power supply has no hard turn-on or turn –off situation in transition, thus the disturbance to the power system is avoided.

相应的激光电源采用半桥软开关技术，串联谐振并联输出，IGBT 为主控制元件，实现了高频工作、高功率多路输出，响应快速；脉冲模式工作时避免了开关管的硬开关，减小了高次谐波对电网的干扰；无需镇流电阻也可实现气体稳定放电等特性。

In the design of the power supply, the main circuit topology frame uses full-bridge series resonant switching and parallel load connection, in which, four MOSFETs are adopted as the power switches, and by four pulses which UC3879 produces, high frequency operation and fast response are realized. In addition, the MOSFET in the switching power supply has no hard turn-on or turn-off situation in transition, thus the disturbance to the power system is avoided. Especially,by the use of high frequency transformer, PQ50/50, the switching power system can provide the steady discharge current without any amperite.

此开关电源采用全桥软开关技术、串联谐振并联输出，四个MOSFET管为主控制开关元件，通过脉冲产生电路UC3879产生的四路相关脉冲实现了高频交替开关，同时能快速响应输出的各种变化；避免了开关管的硬开关，提高了转换效率，另外通过采用高频变压器PQ50/50隔离了原副边，减小了高次谐波对电网干扰；无需镇流电阻也可实现气体稳定放电。

While the sheave on most pulleys will not "spin," it should still turn freely.

这是对滑轮的描述，不知spin和turn怎么区别好

Both devices feature separate set and reset functions that allow the user to turn on or turn off all outputs simul- taneously with a single control line.

两款器件都具有单独的设置，并允许用户打开或关闭一个单一的控制线与所有输出模拟入门-脲嘧啶复位功能。

The role of a-Si:H sublayers is to interrupt the continuous growth and limit the thickness of pc-Si:H sublayers. The a-Si:H sublayers are deposited by two methods, one is fabricated by low hydrogen dilution ratio R = 4, and the second is deposited by pulse-wave modulation plasma with turn-on time (TON = 25 ms) and plasma turn-off time (TOFF = 75 ms).

阻断层所用的非晶矽薄膜采用两种方式制作，第一种是利用低氢稀释比(R = 4)制作的非晶矽，第二种是利用脉波调变电浆开启时间及开关时间分别为25ms及75ms pulse(25ms/75ms所制作的非晶矽。

Buck and Boost topology switching power conversion circuits as the core of this system, ultra low power MSP430F1222 microcontroller-based controller, microcontroller produced by the PWM pulse width modulation signals, respectively, two-way control switch voltage conversion circuit the turn-on and turn-off in order to achieve the above two kinds of topology switching power conversion circuit, and then to draw power from the flow of electrical energy has been filled into the rechargeable battery, and using microcontroller A / D input voltage implementation of the monitoring, according to the input voltage switching buck - circuit at a lower cost to achieve a highly efficient energy transfer, and the circuit is simple, the parameter to determine easy, self-low power consumption,to achieve full-featured.

本系统以Buck降压和Boost升压拓扑结构开关电源变换电路为核心，以超低功耗单片机MSP430F1222为主控器，由单片机产生PWM脉宽调制信号，分别控制两路电压变换电路中开关管的导通与关断从而实现以上两种拓扑结构开关电源变换电路，进而从一直流电源中吸取电能充入可充电电池，并利用单片机A/D对输入电压实施监测，根据输入电压切换升降压电路，以较低的成本实现了高效率的电能转移，并且电路简单、参数确定容易，自身功耗低，实现功能完整。

The Yankees shortstop addressed the topics on Thursday in New York, while attending a function for his Turn 2 Foundation at the Ziegfeld Theater.

这位洋基的游击手星期四在纽约的齐格菲剧院出席他自己的Turn 2基金会时，发表以上声明。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。