查询词典 DC

Part II The experiment study on anti-tumour effect of dendritic cells derived from peripheral blood monocyte of patients with oral cancer after pulsed by tumour antigen in different ways. Collected 50ml peripheral blood from each patients and volunteers to induced DC in vitro. We parted the test group and control group into three subgroups respectively, untreated group A, freezed and thawn group B, RNA transfected group C. To group A, after induced DCs for five days , we added 200U/mlTNF-α in each hole and cultured on. To group B, we added protein antigen (DC/ tumor cells = 1 : 1 ,each hole) for 4h at 5d, and then added 200U/mlTNF-α in each hole and cultured on. To group C, transfected immature DC with tumor cell RNA(DC:RNA=1×105/ml: 5ug)at 5d, operated completely with the specification of invitrogen DMRIE-C reagents. After transfection we replaced transfection agent with complete medium, and then added 200U/mlTNF-α in each hole and cultured on.

第二部分口腔癌患者外周血来源的树突状细胞体外负载抗原后抑瘤作用的实验研究无菌采集20例口腔癌患者和20例健康志愿者外周血50ml，分离单个核细胞体外诱导培养DC，并将实验组和对照组细胞各分为三组，A组为未处理组，B组为冻融组，C组为RNA转染组。A组DC在培养5d后，每孔加入TNF-α200U/ml；B组DC培养第5d后，每孔中加入癌细胞蛋白抗原，使DC/肿瘤细胞=1：1，继续培养4h后，每孔加入TNF-α200U/ml；C组将培养至第5d的未成熟DC用肿瘤细胞RNA进行转染(DC：RNA=1×105/ml： 5ug，按照invitrogen DMRIE-C试剂说明书进行操作)，转染结束后用完全培基取代转染剂，每孔加入TNF-α200U/ml。

To meet with the DC feeder cable without ground wiring, different DC current method was proposed to solve the problem of DC leakage curren on-line detection of the cable. The paper still studied in primary the feasibility of low frequency superposition method to detect the DC feeder cable. It not only explained the working theory of the system, but also presented some problems to be solved.

针对直流馈出电缆无接地线，提出采用差量直流电流法解决了电缆直流泄漏电流的在线检测问题，并初步研究了低频叠加法监测直流馈出电缆的可行性，给出了工作原理及还需解决的问题。

Digital Language nuclear phase meter, intelligent dielectric loss test, instrument megger, frequency series resonance test device, grounding resistance tester, transformer load switch tester, the nuclear-phase high-pressure device, vacuum oil filter, clamp grounding resistance instrument, stray current detector, transformer features an integrated tester, cable fault tester, DC resistance tester, digital relay protection tester, automatic transformation ratio tester, relay protection tester, vacuum tester, Loop resistance tester, wireless high-pressure phase of nuclear device, active transformer capacity tester, insulation oil dielectric strength tester, high voltage switch mechanical properties tester, intelligent switching characteristics tester, light-up-flow devices, wireless instrument of nuclear phase, oxidation Zinc arrester tester, high voltage test transformer, DC high-voltage generator, lightning counter checkers, inductive load DC resistance tester, dielectric strength of insulating oil automatic tester, relay protection test chamber, multi-function test bed, IF DC - Generators

数显语言核相仪，智能化介质损耗测试，仪兆欧表，变频串联谐振试验装置，接地电阻测试仪，变压器有载开关测试仪，高压核相仪，真空滤油机，钳形接地电阻仪，杂散电流测定仪，互感器特性综合测试仪，电缆故障测试仪，直流电阻测试仪，微机继电保护测试仪，全自动变比测试仪，继电保护测试仪，真空度测试仪，回路电阻测试仪，高压无线核相仪，有源变压器容量测试仪，绝缘油介电强度测定仪，高压开关机械特性测试仪，智能开关特性测试仪，轻型升流器，无线核相仪，氧化锌避雷器测试仪，高压试验变压器，直流高压发生器，雷击计数器校验器，感性负载直流电阻测试仪，绝缘油介电强度全自动测试仪，继电保护试验箱，多功能测试台，中频直流发生器

Professional production of various types of micro motor, micro DC motor, brushless DC motor, micro-speed DC motors, DC generators and three-phase alternator.

专业生产各种类型微特电机、微型直流电动机、直流无刷电动机、微型直流稳速电动机、直流发电机和三相交流发电机。

DC motor complex large-scale three-phase power transformer deep-trough three-phase asynchronous motor DC motor DC motor single-phase squirrel-cage induction motor.Three-phase commutator motors, single-phase motor power sub-phase squirrel-cage three-phase asynchronous electric double mine explosion-proof motor with squirrel-cage three-phase asynchronous motor rotor cup AC servo motor drives three-phase asynchronous motor principle of rotating magnetic field Generation and transmission of three-phase induction motor winding three-phase stepper motor 165mm Three-phase three-phase synchronous motor stepping motor JFB power generator rotor rectifier type AC synchronous motor DC servo motor three-phase current rotating magnetic field of teaching instrument Wound Three-phase alternator motor 160 rats of three-phase permanent magnet generator cage induction motor Synchro Motor medium-sized three-phase power transformer

直流复励电动机大型三相电力变压器三相异步深槽式电动机直流电动机直流电机单相异步鼠笼式电动机三相整流子电动机单相电动机电源分相器三相异步双槽鼠笼电机矿用防爆电动机三相异步鼠笼式电动机杯形转子交流伺服电动机三相异步电动机调速原理旋转磁场的产生与变速三相绕线式异步电动机 165mm三相步进电机三相同步电动机 JFB型硅整流发电机转子供电交流同步电机直流伺服电动机三相电流旋转磁场示教仪绕线式电动机三相交流发电机 160型永磁发电机三相鼠笼异步电动机自整角电机中型三相电力变压器

A new modeling method for DC-DC power coverter is proposed in chapter 3, and it is applied to the analysis of output ripple voltage of boost and buck DC-DC converters.

本文提出了开关DC-DC变换器的线性空间建模法，并将其成功地用于升压型和降压型DC-DC变换器的分析，首次导出了上述两类变换器的输出纹波表达式，特。。。

Was founded in 1998, the main distribution line agents and flake-like electronic components, has Huake, thick sound, YAGEO resistance, Howard Branch, YAGEO, Samsung, TDK's capacitor, the United States AVX and KEMET, Japan NEC tantalum capacitor, NEC, PHILIPS, MOTOROLA, long electric brand b / triode, ST and ROHM's regulator tube, TOREX, Pui Ling, Li Qi, Jing-fu, Taiwan's power supply LDO regulator IC, DC / DC step-up IC, DC / DC step-down IC, TDK, too enticed, Fenghua inductor, bead, Panasonic adjustable capacitance, an adjustable resistor, three-ying Korea and Japan's Sanyo electrolytic capacitors, and insurance management, light-emitting diodes, thermistors, varistors, the brand of integrated circuits and so on; are a professional supporting electronic components for over many years of experience supporting services.

深圳金星电子科技有限公司成立于1998年，主要代理经销直插式和片状式的电子元器件，有华科、厚声、YAGEO的电阻，华科、YAGEO、三星、TDK的电容，美国AVX和KEMET、日本NEC的钽电容， NEC 、PHILIPS、MOTOROLA、长电品牌的二/三极管，ST和ROHM的稳压管，TOREX、贝岭、立奇、富晶、台湾的LDO电源稳压IC、DC/DC升压IC，DC/DC降压IC，TDK、太诱、风华的电感、磁珠，松下的可调电容、可调电阻，韩国三莹和日本三洋的电解电容，及保险管、发光二极管、热敏电阻、压敏电阻、各国品牌集成电路等等；是一家专业的电子元器件配套商，已有多年的配套服务经验。

By using synchronous rectifier, a higher efficiency low-voltage output DC/DC converter module can be achieved. This paper presents a kind of synchronous rectification DC/DC converter, which includes active clamp circuit, insulating transformer, and current double synchronous rectifier.

为提高低输出电压的DC/DC变换器的效率，提出了一种倍流同步整流有源箝位DC/DC变换器，电路拓扑主要包括有源箝位电路、隔离变压器和倍流同步整流电路。

A DC bias of approximately 1.2V is present at this pin.A DC blocking capacitor is needed if the signal has a different DC level.

阿约1.2V的直流偏置在这个pin.A直流阻挡电容器，是目前需要的信号，如果有不同的直流电平。

There are two main disadvantages in the present differential algebra equation model used in AC/DC system: one is that 'dimensional calamity' can occur with the increment of DC transmission lines; another is that it is difficult to deal with the switch of DC control mode.

目前普遍使用的AC/DC系统的微分代数模型主要存在2大缺陷：①随着直流线路的增加可能出现"维数灾难"问题；②不易处理直流控制方式的切换，计算繁杂。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。