查询词典 turn-back

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。

Snatch a victory out of defeat; get upsides with; pull out of the fire; turn defeat into victory; turn the table on

成语变失败为胜利。例句这位将军具有～的卓越的军事才能；他受到部下的热情拥戴。

However, to turn the radio off you have to hold the power button for a few seconds…a quick push will not turn it off.

但是，要关闭收音机，你也得摁住电源按钮数秒才行，快速推一下按钮则无法关机。

It is noted that the braided ones will turn over by themselves while cooking, whereas the ring-shaped ones require that you turn them over.

是指出辫状也会把自己的同时，烹饪，而环形的要求您把它们。

Map from characteristic rotating vector of images to turn angle is realized by associate memory neural network, whose accuracy and speed can meet the requirement of autonomous turn control. The algorithms also have perfect anti-disturbance performance.

利用联想记忆神经网络实现了由图像的特征旋转矢量到转弯角度的映射，其精度和速度均可满足自主转弯控制的要求，而且具有良好的抗干扰性能。

Therefore, each section and school want to be further regular to course of understanding, strengthen management, then can realization experiment teaching of the norm turn, normalization with keep on turn development.

因此，各部门和学校要进一步端正对课程的认识，加强管理，才能实现实验教学的规范化、常态化和持续化发展。

Read the way the past 20 years of long study, like a worm in the book, turn to turn to the sea.

一路读过来，二十多年的长学，像一只虫子在书的海洋里翻来翻去。

Best coupling when the first turn of the secondary coil is level with the first primary turn.

最佳耦合当次级线圈第一轮与第一小学之交的水平。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。