直流的

This paper focuses on the optimal pitch arrangement in double-side heating once-through steam generator with helix tube inside.

本文主要研究了带内螺旋缠绕管的管套管双面加热直流蒸汽发生器元件中沸腾段内螺旋管螺距设置的优化问题。

Storage battery as the direct current power supply of the locomotive is important to the move of the locomotive.

蓄电池作为机车上的直流电源，对机车运行起着重要的作用。

Flute playing of Health simply squatted here day and night, willing to cleanse the springs also have been an endless stream flow down the mountain from here, the land has lush mountain drought is up, the village folks also lived a good life.

笛生索性蹲在这里日夜吹奏，甘洌的泉水也就源源不断地从这里一直流到山下，山下久旱的土地又茂盛了起来，乡亲们又过上了好日子。

This device has been used to control the brightness of an automotive tail lamp and as a motor speed control for small DC fans of the type used in computer power supplies.

这个装置可以控制汽车尾灯的亮度，及电脑电源用的直流风扇。

When y＝0.15, the tenability at 10kHz is as high as 35.4% under a relative low electric-field (2.0kV/cm).

当y＝0.15时，在较小的直流偏压下（2.0kV/cm），10kHz下的电场可调度最大可达到35.4％。

This instrument provides not only local pressures with indication but also continual output of 4～20mA direct current signal with linear relationship with its testee pressure signal.

带上隔膜部分后，可测量粘度大、有腐蚀性介质的压力。本仪表除就地进行压力指示外，还连续输出与被测压力信号成线性的4～20mA或0-10mA直流信号。

The thermoelectric effect is considered which illustrates the asymmetry wear of electrodes in aluminum alloy direct current RSW.

数值模拟中考虑了珀尔帖热电效应的影响，从数量上准确地解释了铝合金直流电阻点焊中电极的不对称烧损问题。

As in Pyongyang, the Beijing trains run on 750 volts DC third rail power and are 2.7 m wide; differences between the two are largely cosmetic.

跟平壤地铁一样，北京地铁列车也是由750伏特的直流第三轨供电运行，宽度2.7米，二者的差别主要在于内饰。

The three valued logic modulation technique is usually used in the conventional current source PWM rectifier, and the SPWM control waveform can be obtained by the interphase decoupling.

传统的电流型PWM整流器一般采用三值逻辑SPWM调制技术，通过相间解耦预处理的方法获得实际PWM控制波形，过程复杂且直流电流利用率较低。

The drift and jitter of the output pulse are important parameters of the stability.The experiments and analyses based on homemade VE-4073 thyratron show that the combined effects of DC heating thyratron and two-pulse triggering technique can greatly reduce the drift and jitter of the pulser output.

利用国产VE-4073氢闸管进行了分析和实验研究，通过采用直流加热氢闸管灯丝和氢储存器，以及精确、稳定的双脉冲触发技术，大幅减小了开关脉冲发生器触发延时的抖动和漂移，48 h内开关脉冲发生器输出漂移仅6.1 ns。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。