查询词典 DC

However, I found that by applying DC or DC plus AC with the pins 80 biased anodically, silicon collection is minimized.

然而，我发现对阳极偏置的针80施加直流电或直流电与交流电，可将硅汇集现象减少到最低程度。

DC.,which included sterilization of explants,the induction of callus and establishment of cell suspension culture system of Ardisia pusilla A.DC.,the examination on the process from the seed germination to mature plant,the discovery of "multi-embryo" phenomenon.

内容涉及：外植体消毒方法确定，愈伤组织诱导和悬浮培养，九节龙培养基硬度最适条件的确定，九节龙从种子萌发到成苗过程的观察，九节龙种子的&多胚现象&的发现。

A phase-shifted controlling PWM DC/DC full bridge converter with softswitching is proposed and used to realize a constant current power of20A(5～48V).This full bridge converter utilizes the transformer leakageinductance(or the resonant inductance in series with transformersprimary)and the autoecious capacitance of MOSFET to achieveZVS(Zero-Voltage-Switching),as a result it can decrease the switchingwaste,increase the switching frequency,and diminish the power bulk.

本文使用一种通过移相控制进行脉宽调制的软开关全桥变换器来实现20A(5～48V)恒流源，这种全桥变换器利用变压器的漏感、原边串联谐振电感和功率管的寄生电容来实现开关管的零电压开通，降低了开关损耗，提高了开关频率，减小了电源体积。

So LLC series resonant Full Bridge DC/DC converter has biggish research value.

本文以LLC串联谐振全桥DC/DC变换器作为研究内容。

The adaptor is a must for numerous computer peripherals. As an important computer exporter worldwide, the dc power supply industry is bloomy in Taiwan. In today's dc power supply market, the switch power supply has replaced the linear adaptor as main stream in the industry globally for its compact size. However, SPS has a serious problem of high frequency electromagnetic interference and causes harmonic feedback for the AC power source compared with linear adaptor. The energy consumption is also worse for SPS than linear adaptor.

摘要整流器是许多电脑周边设备不可或缺的电能，而台湾又是电脑及周边产品出口大宗国，因此电源供应器产业澎勃发展是必然的，其中轻薄短小及输出稳定之交换式电源供应器(Switch Power Supply：SPS)，已取代传统线性整流器的地位，成为外销主力并取得世界龙头地位，然SPS有严重的高频电磁干扰问题(150KHz~300MHz)，在交流电源侧产生的谐波含量，也较线性整流器来得严重，为一耗能产品。

The blushless DC motor has been developed intensly in the latest years. This kind of motors have the merits of both the DC motor and the AC motor, including the high power density and small volume. But it needs a complex and expensive control system, which becomes the biggest obstucle for the blushless motor to be further used.

电气传动域中的无刷直流电机近年来得到了飞速的发展，该电机将交流电机和直流电机的优点相结合，并且具有较高的功率密度和较小的体积，但是其控制系统复杂，代价大，这些都困扰着它在民用领域的进一步应用。

P. R. K. Chetty,"Current Injected Equivalent Circuit Approach To Modeling Switching DC-DC Converter," IEEE Trans.

曾龙图、林志一，IsSpice Version 8 交谈式电路模拟分析与应用，全华科技图书股份有限公司，台北，1998。

Methods Peripheral blood mononuclear cells from healthy donors were induced to become dendric cells and CIK, using tumor antigen extracted from gastric cancer SGC7901 cells to sensitize DC, antigenpulsed dendritic cells were cocultured with CIK to generate CIK induced by gastric cancer antigenpulsed DC.

从正常人外周血单个核细胞诱导DC、CIK细胞，用胃癌细胞SGC7901抗原致敏DC。致敏DC与CIK共培养，制备经胃癌抗原致敏的DC诱导CIK细胞。

Alumina Bayer production desiliconization workshop, easy to coke possession of the road, easy to use separate Pressure Seal Globe Valves valve type, valve seat can be place, and carbide seal pair of DC-style cut-off valve or DC-type throttle valve.

氧化铝拜耳法生产中的脱硅车间、易结焦的管路上，易选用阀体分开式、阀座可去处的、硬质合金密封副的直流式截止阀或直流式节流阀。

Methods Granulocyte/macrophage colony stimulating factors and interleukin 4 were used to cultivate DC from peripheral blood of hepatocellular carcinoma patients.Tumor associated antigen extracted from human liver cancer HepG2 cell line was used to activate the DC,which will initiate homogenic T lymphocyte to form cytotoxic T lymphocyte.HepG2 cells were transplanted to the nude mice and were treated with CTL.Expression of PCNA in tumor cells was evaluated.

联合应用粒/巨细胞集落刺激因子及白介素-4(IL-4)直接从肝癌患者外周血中培养出DC；以源于人肝癌细胞系HepG2细胞的肿瘤抗原粗提物刺激DC；DC激活同源的T淋巴细胞产生细胞毒性T淋巴细胞；建立人肝癌细胞系HepG2裸鼠移植瘤模型；CTL治疗人肝癌细胞系HepG2裸鼠移植瘤；检测移植瘤标本肿瘤细胞PCNA表达水平。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。