助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   (pwm) 的翻译结果: 查询用时:0.413秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

pwm
相关语句
  “(pwm)”译为未确定词的双语例句
     The operating principle of a bridge type Pulse Width Modulation(PWM) power source,driving of switch element IGBT,overvoltage and overcurrent are briefly described in the paper.
     概述了桥式脉冲宽度调制(PWM)功率源的工作原理,以及开关元件IGBT的驱动、过压、过流保护等问题。
短句来源
     This paper introduces the measure and control theory in hydraulic elevator,also introduced how to utilize programmable logic device EPM7128SLC84 to realize the check and measure of velocity and produce multiplexing PWM signals to control elevator velocity in hydraulic elevator velocity control system?
     该文简要介绍了液压电梯测控原理,并详细介绍了采用Altera公司的可编程逻辑器件EPM7128SLC84实现轿厢速度检测及产生多路脉宽调制信号(PWM)来控制电梯速度的方法。
短句来源
     Based on the DMD and Digital Light Processing (DLP) principles, this paper analyzes the control mechanism of the Pulse Width Modulation (PWM) of the DMD with the specific electromechanical control method of the DMD, and establishes the PWM electromechanical control model of the DMD.
     本文在综述数字微镜装置和数字光处理技术(DLP)的工作原理的基础上,分析了数字微镜装置的脉冲宽度调制(PWM)控制原理、明确了对数字微镜装置的机电控制方法,建立了DMD的PWM机电控制系统模型;
短句来源
     Results:Pokeweed mitogen(PWM) and lipopolysaccharide(LPS) induced the expression of IL 2R α chain on human monocytes at 24h and 48h culture,phytohemagglutinin (PHA) did the same only at 48h culture,while concanavalin(ConA) did not.
     结果:美洲商陆(PWM)和脂多糖(LPS)在处理24小时后诱导人单核细胞表达IL-2受体α链; 植物血凝素(PHA)只有在处理48小时后才观察到有诱导α链表达作用;
短句来源
     This paper introduces the optional elimination of lower harmonic wave in inverter's output voltage by means of PWM control based on 8031 single chip microcomputer, which is used in UPS made of CVCF inverter;
     介绍由8031单片机实现的有选择地消除逆变器输出电压中低次谐波的脉宽调制(PWM)控制方式,将其用于由恒频恒压(CVCF)逆变器构成的不停电电源系统(UPS)的情况,分析其工作原理和微机控制系统的实现;
短句来源
更多       
  相似匹配句对
     The Simulation of PWM by Computer
     PWM波形的计算机仿真
短句来源
     Design and approach electromagnetic compatibility on PWM system
     PWM系统电磁兼容性设计
短句来源
     PWM Alternating Dimmers
     PWM脉宽调制交流调光器
短句来源
查询“(pwm)”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  pwm
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.
      
Finally, it is verified that the proposed SVPWM is actually a pulse-width modulation (PWM) technology based on line voltages.
      
A novel PWM scheme to eliminate the diode freewheeling in the inactive phase in BLDC motor
      
However, a ripple current occurs in the inactive phase due to the diode freewheeling during the non-commutation period in the traditional pulse width modulation (PWM) methods, which aggravates the torque ripples.
      
A new PWM method is proposed in this paper to eliminate the diode freewheeling during the non-commutation period in the inactive phase.
      
更多          


Recently,the dynamic changesof cytostatic and cytocidal effect ofspleen cells of tumor-bearing mice ontarget tumor cells were studied withthe technigue of ~(125)IUdR assay,Lym-phocyte transformation of similarspleens by Con A and PWM wasalso studied.In most experiments,Ehrlich ascitic tumor cells were usedand each C57BL mouse was inocula-ted intramuscularly with 5×10~6 viabletumor cells in the right thight as atumor bearer.In other experiments,Sarcoma 180 ascitic cells in C57BLmice and Hepatoma acitic...

Recently,the dynamic changesof cytostatic and cytocidal effect ofspleen cells of tumor-bearing mice ontarget tumor cells were studied withthe technigue of ~(125)IUdR assay,Lym-phocyte transformation of similarspleens by Con A and PWM wasalso studied.In most experiments,Ehrlich ascitic tumor cells were usedand each C57BL mouse was inocula-ted intramuscularly with 5×10~6 viabletumor cells in the right thight as atumor bearer.In other experiments,Sarcoma 180 ascitic cells in C57BLmice and Hepatoma acitic cells inTienjing No 1 albino mice were alsoemployed.Results of our experiments indic- ated that spleen cells of tumor-bearingmice inhibited strongly DNA syn-thesis of tumor cells in vitro.Suchcytostatic effect was already quitemanifested at the 7th day after tumorinoculation and increased henceforthin parallel with the growth of tumorand an enlargement of spleen.Afterthe surgical removal of tumor,cytost-atic effect decreased rapidly and couldno longer be detected on the 21thday after amputation and consequen-tly the spleen returned almost to itsnormal size.Moreover,we have alsoinoculated ascitic tumor cells intothymectomized,X-irrdiated,bone-marrow-reconstituted mice,and theirspleen cells were also shown to bestrongly cytostatic to tumor cells.On the other hand,our datapointed out that the spleen cells ofmice bearing large Ehrlich tumor couldnot kill in vitro ~(125)IUdR labelledEhrlich tumor cells as determined by~(125)IUdR release assay.Furthermore,these spleen cells were also found tobe suppressed with respect to theirresponse to lymphocyte mitogens ConA and PWM.In fact,spleen cells from micebearing Ehrlich tumor inhibited the~(125)IUdR uptake of Sarcoma 180cells and Hepatoma ascitic cells to asimilar extent.Similarly,the spleencells from mice bearing solid Hep-atoma and Sarcoma 180 also inhibitedstrongly the ~(125)IUdR uptake ofEhrlich tumor cells.Thus,cytostaticeffect of spleen cells of tumor-bearingmice against tumor cells in vitro isa kind of non-specific inhibition.Histopathologic studies showedthat the increase in the amount ofreticulum cells and macrophages inthe spleen of tumor-bearing mice hada good correlation with its increasein cytostatic effect on tumor cells.At the same time,there was a conco-mitant decrease in the number ofsmall lymphocytes and an incrase inthe number of immature haematopoie-tic cells.This latter fact might ex-plain the general absence of cytocidaleffect of spleen cells on tumor cellsas well as the deficient response ofspleen cells to lymphocyte mitogenslike ConA and PWM in the tumor-bearing mice.Taken together all the above re-sults,we tentatively suggest that theeffector cells of cytostatic effect intumor-bearing mouse spleen are notT、B lymphocytes.The exact natureof these suppsessor cells as well astheir possible mechanisms of actionare now under investigation.

应用5-~(125)碘-2’-脱氧尿嘧啶核苷(~(125)IUdR)参入抑制试验,证明带Ehrlich实体瘤的C57BL 小鼠脾脏细胞可在体外对同一移植肿瘤细胞的DNA 合成产生显著的抑制。随着肿瘤的增长,带瘤小鼠的脾脏进行性增大,脾细胞对肿瘤细胞的抑制效应也随之增强。这种对肿瘤细胞DNA合成的抑制作用是非特异的。肿瘤切除后,抑制效应也随之下降,到术后21天,细胞静止效应已不能测得。本文还应用~(125)IUdR技术同时测定了带瘤小鼠脾脏的T 杀伤细胞,脾脏淋巴细胞对致分裂原Con A 与PWM 的转化反应的动态变化,实验表明带瘤小鼠脾脏T、B 淋巴细胞的功能是受抑制的。组织病理学观察提示,带瘤动物脾脏的网织细胞和巨噬细胞的增多可能与细胞静止效应的增强有关。

In this paper some important topics concerning pulse width modulated (PWM)DC motor speed control systems are discussed and the conclusions confirmed by test.An engineering method for designing such systems is proposed and it can be used also as a design reference for similar systems'.

本文讨论脉宽调制式(PWM式)直流调速系统运行中的几个重要问题,并在此基础上提出了系统设计的工程处理方法.所得结论均经过实验验证,可供设计同类系统时参考.

In the resonant transformerless switching-mode power supplies (TLSMPS), the method of switchoff in the duration of zero current is applied. Consequently, as compared with chopper (PWM) type TLSMPS, it is possible to avoid the second breakdown, reduce the switching dissipation and radio frequency interference in the resonant TLSMPS.The operation of the power circuit of resonant TLSMPS is analyzed mathematically and the features of control are discussed in this paper. For solving the problem of stabilization...

In the resonant transformerless switching-mode power supplies (TLSMPS), the method of switchoff in the duration of zero current is applied. Consequently, as compared with chopper (PWM) type TLSMPS, it is possible to avoid the second breakdown, reduce the switching dissipation and radio frequency interference in the resonant TLSMPS.The operation of the power circuit of resonant TLSMPS is analyzed mathematically and the features of control are discussed in this paper. For solving the problem of stabilization in the control system of resonant TLSMPS, the technique of "forward" ripple feedback is proposed. Also, the existence of minor carrier storage effect in switching transistor of resonant loop is illustrated, and the impact of this effect is reduced.

本文完整地分析了谐振式开关电源主回路工作的各个电性过程,阐明了它们的控制特点,指出采用纹波“提前”反馈技术可以解决控制的稳定性问题,揭示了开关管少数载流子存储效应在谐振回路中的表现形式及解决办法。实验线路获得了良好的技术指标。和同功率串联稳压电源相比,效率大为提高,体积重量大为减小。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关(pwm)的内容
在知识搜索中查有关(pwm)的内容
在数字搜索中查有关(pwm)的内容
在概念知识元中查有关(pwm)的内容
在学术趋势中查有关(pwm)的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社