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脉冲     
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  pulse
    Study on the Mechanism and Process of Pulse Current Hot Joining of Alloys
    脉冲大电流热焊接合金的机理和工艺研究
短句来源
    STUDY ON THE FAVOURABLE METAL TRANSFER MODE IN PULSE MIG WELDING
    熔化极脉冲焊熔滴过渡合理形式的研究
短句来源
    CLOSE LOOP CONTROL OF WELD PENETRATION IN PULSE PLASMA ARC WELDING
    脉冲等离子弧焊接焊透质量的闭环控制
短句来源
    Large pulse power supply for EDM
    电火花加工大功率脉冲电源
短句来源
    SIMULTANEOUS DETERMINATION OF TRACE OF BISMUTH, LEAD, CADMIUM AND ZINC IN NICKEL AND NICKEL-BASE ALLOYS BY DIFFERENTIAL PULSE ANODIC STRIPPING VOLTAMMETRY
    微分脉冲阳极溶出伏安法同时测定镍和镍基合金中微量铋、铅、镉、锌
短句来源
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  impulse
    Design of Impulse Rolling Tool
    脉冲式滚压工具设计
短句来源
    INFLUENCE OF IMPULSE CURRENT ON THE STRUCTURE AND FAILURE BEHAVIOR OF Zn-22% AI ALLOY
    脉冲电流对Zn-22%Al合金组织及断裂行为的影响
短句来源
    Experimental Measurement of the Change Process for Impulse TIG Welding Pool Width
    脉冲TIG焊熔池宽度变化过程的实验检测
短句来源
    Determinating Oxygen and Nitrogen Simultaneously in Metals With Impulse Inert Gas Fusion Method
    脉冲惰气熔化法同时测定金属中氧氮
短句来源
    STUDY ON ATOMIC DISTRIBUTION FUNCTION OF AMORPHOUS Ni-P ALLOY PREPARED BY IMPULSE ELECTROLESS PLATING
    脉冲化学沉积非晶态Ni-P合金原子分布函数研究
短句来源
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  pluse
    PREPARATION OF BLACK STAINLESS STEEL BY NORMAL PLUSE VOLTAMMETRY METHOD
    常规脉冲伏安法制备黑色不锈钢及性能测试
短句来源
    DC TIG are welding. pluse are welding. variable polarity TIG are welding wererealized by means of controlling the set signal of current and the state of main circuit, which meet the needof flexible welding of are welding robot.
    研制了一台弧焊机器人配套使用的单片机控制的多功能TIG焊机,采用恒流源加逆变桥的组合式结构,以IGBT为功率器件,单片机为控制核心,实现了一机多能,可工作于直流TTG焊、脉冲焊、变极性TIG焊三种方式,满足弧焊机器人柔性焊接的要求。
短句来源
    This paper illuminates the principle,installation,failure,reason and solution of WSM series SCR inverter pluse TIG welding machine.
    介绍了WSM系列晶闸管逆变式直流脉冲TIG焊机的基本原理、安装、故障现象、原因以及排除方法。
短句来源
  “脉冲”译为未确定词的双语例句
    Study of Ultrasonic Vibration Assisted Grinding and Electrical Discharge Machining Mechanism and Its Intelligent Control
    超声振动—磨削—脉冲放电复合加工技术及其智能控制的研究
短句来源
    A NEW INSTRUMENT FOR DETERMING HYDROGEN IN METALS-TYPE DH-1 VACUUM IMPULSE-GAS CHROMATOGRAPHIC HYDROGEN DETERMINATOR
    测定金属中氢的新仪器——DH-1型真空脉冲气相色谱定氢仪
短句来源
    Study on Arc Stability of A.C.TIG Welding
    交流TIG焊接稳弧问题的研究——稳弧脉冲对电弧稳定性的影响
短句来源
    Study on the Projection weld of Thin Molybdenum Sheets
    钼箔脉冲凸焊研究
短句来源
    Study on Observing and Controlling MAG Welding Pool by Digital Image Technique
    用微机图象法对脉冲MAG焊接熔池进行观察和控制的研究
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  pulse
A sensitive complex absorptive wave of Ca-ARS was obtained by using differential pulse voltammetry when a mercury film glass carbon electrode was immersed in 0.1 mol L-1 KOH and 4.5×10-4 mol L-1 ARS solution.
      
The reaction mechanism between isoquinoline and ·OH radical in aqueous dilute solutions under different conditions was studied by pulse radiolysis.
      
The electrochemical behavior of ciprofloxacin (CFX) and its interaction with the natural calf thymus DNA (ctDNA) is studied by using pulse difference voltammetry on a carbon electrode.
      
Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed.
      
In this paper, the authors propose a new space vector pulse width modulation (SVPWM) algorithm based on non-orthogonal coordinates for N-level inverters.
      
更多          
  impulse
In the research on spatial hearing and realization of virtual auditory space, it is important to effectively model the head-related transfer functions (HRTFs) or head-related impulse responses (HRIRs).
      
Three driving fronts were found in the experiment: piston front, encircle front and impulse front.
      
Intermediate conditions under impulse constraints may induce effects similar to the effects due to the discontinuity of control coefficients.
      
Optimization of kinetic energy of a micro-object by impulse fields
      
Two classes of extreme motion trajectories of a point with varying specific impulse
      
更多          
  pluse
Two algorithms for adapting exposures to pluse-arrival rates are briefly described, and examples of their use in radiometers are given.
      
This paper which is based on the results of some relative experiments, assumes deformation mode and utilizes Lagrange method to analyse the elastic pluse buckling of a thin cylindrical shell with a finite length under a cosine impulse.
      
Results showed that, with the exception of asparagine pluse aspartic acid and glutamine plus glutamic acid, the other 13 amino acids studied, expressed as perecentages of total amino acids extracted, were generally very uniform among the soils.
      
Such integration events would disrupt the putative E1-plusE2TA repressor species.
      
The voltage pluse which is coupled with the singel flux quantum is shown.
      


Two types of 300A low frequency pulse arc TIG welding machine have been developed. In this machine the pulse current is made purposely to have a peak at the leading edge, which enables successfully one side welding of small diameter tubes in position and meanwhile obtaining good reverse side weld forming. The method for improving the dynamic response of the saturable reactor is analysed and the problem of surge current at the arc initiation is solved. The electric circuits of both types of saturable reactor...

Two types of 300A low frequency pulse arc TIG welding machine have been developed. In this machine the pulse current is made purposely to have a peak at the leading edge, which enables successfully one side welding of small diameter tubes in position and meanwhile obtaining good reverse side weld forming. The method for improving the dynamic response of the saturable reactor is analysed and the problem of surge current at the arc initiation is solved. The electric circuits of both types of saturable reactor prove that they meet the technological requirements of low frequency pulse arc TIG welding. The pulse current generator is simple and is made with ordinary electronic devices. A simple electronic circuit is adopted for compensating the power mains fluctuation. These machines have excellent characteristics and are simple in construction, reliable in operation, easy to be repaired and light in weight. The weldable thickness for one pass welding ranges from 1-5mm in case of square butt joints and may be larger if bevel groove is applied. The developed machines are now being used in practice for welding 2-3.5mm, thick tubes in position and also the first pass of the circumferential seams of the pressure vessel made with 17mm thick stainless steel plates.

研制了两种300 A带尖峰的低频脉冲钨极氩弧焊设备,成功地解决了小直径管子等许多产 品的单面焊双面成型的工艺问题。分析了改善磁放大器电磁惯性的方法,克服了引弧冲击问 题;所用磁放大器的两种线路,均能满足低频脉冲焊接的工艺要求;用普通元件作成了简单 的带尖峰脉冲发生器;采用了简便的电网波动补偿方案。焊机性能良好、简单可靠、易造好 修、重量较轻。能不开坡口焊透1-5mm钢板,厚板可开坡口对接。该设备已用于2—3.5mm。 厚的管道全位置焊接生产及17mm不锈钢压力容器的环缝封底焊等。

A pulsed plasma-arc all-position welding technique has been successfully applied to the superheater and reheater tubing system jointing of power boilers on a large scale. The effect of processing conditions on welding puddle control and the coordination of the various main parameters from which the primary controlling parameter was chosen have been investigated. It was observed that gas pores caused either by incomplete penetration or by unstable molten puddle constituted the main weld defects, and certain remedy...

A pulsed plasma-arc all-position welding technique has been successfully applied to the superheater and reheater tubing system jointing of power boilers on a large scale. The effect of processing conditions on welding puddle control and the coordination of the various main parameters from which the primary controlling parameter was chosen have been investigated. It was observed that gas pores caused either by incomplete penetration or by unstable molten puddle constituted the main weld defects, and certain remedy measures were found to be effective. The sound effect produced by the plasma jet impulse through key-hole has been considered useful in monitoring weld penetration and it may serve a signal for performance control of the above welding technique.

本文对脉冲等离子焊接锅炉管系的研究工作中一些主要结果进行了论述,如焊接参数对焊接熔池控制的影响,主要焊接参数的匹配及主控参数的选定,焊接缺陷与消除方法及其在生产使用中的情况。还讨论了取等离子弧穿透时产生的音响讯号作为工艺适应控制讯号的问题。

This artical have discussed the process of the vacuum pulsing carbur- izing and the charasteristic of this process. A vacuum furnace with a water cooled wall and a interior heater was used to study the effect of various factor-time, temperature, the interior pressure of the furnace at the carburizing period and the ratio of the diff- ussing period to the carburizing period-on the results of vacuum carbu- rizing. According to the results of tests, some opinions were made. The rate of vacuum carburizing is four...

This artical have discussed the process of the vacuum pulsing carbur- izing and the charasteristic of this process. A vacuum furnace with a water cooled wall and a interior heater was used to study the effect of various factor-time, temperature, the interior pressure of the furnace at the carburizing period and the ratio of the diff- ussing period to the carburizing period-on the results of vacuum carbu- rizing. According to the results of tests, some opinions were made. The rate of vacuum carburizing is four times faster than that of reg- ular carburizing. The carbon content in the surface of the carburising layer can be controled by changing the ratio of diffussing period to car- burizing period. The quality of the vacuum carburizing is much better than the regular carburizing.

本文讨论了脉冲式真空渗碳的工艺过程及其主要特点。 采用内热式冷壁真空炉研究了真空渗碳的各个工艺参数──渗碳时间、渗碳温度、渗碳期炉内压力、扩渗比(扩散期时间与渗碳期时间之比)等──对渗碳效果的影响,并根据试验结果提出一些初步看法。 真空渗碳的速度比普通气体渗碳快4倍,渗碳层的表面含碳量可以通过改变扩渗比得到调整。真空渗碳的质量明显地优于普通气体渗碳。 一般渗碳工艺(指气体渗碳等)的缺点是生产周期过长,渗碳质量不够理想(如经常有异常组织,表面碳浓度控制也不够准确等)。用冷壁内热式真空炉进行真空渗碳,允许采用较高的渗碳温度,使渗碳速度大大加快。在质量上,真空渗碳完全避免了各种异常组织,使渗碳零件的性能有了明显的提高。 本文在进行了一些试验的基础上对真空渗碳的特点、工艺过程、各工艺参数的影响等问题做了初步的探讨。

 
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