查询词典 DC

This paper research topic project is needs to develop facilely, reliable,output voltage stable green, easy to operate quick new AC-DC-AC inversion power source.

本研究课题项目就是要研制出轻便，可靠，输出电压稳定的、绿色的，使用方便快捷的新AC-DC-AC逆变电源。

Later Fawcett went out of business and DC bought up the rights to Captain Marvel and other properties.

后来西特歇业和DC买了Marvel公司的船长和其他财产权利。

Based on CMOS technology and using Composer and Spectre tools of Cadence EDA, a type of single-chip controller is designed for the fly-back switching power supply of AC/DC. It works at 70KHz with current mode pulse width modulation; and the max duty is 75 percent.

本论文基于高压CMOS工艺，用Cadence EDA中的Composer包及Spectre仿真工具，设计了一种反激式AC/DC开关电源控制芯片。

To obtain high average current electron beams for high average power Free Electron Laser, a DC-SC photocathode injector is designed.

为获得用于高平均功率自由电子激光的高平均流强电子束，设计了一种新型的DC-SC光阴极注入器，并对其进行了优化设计和束流动力学研究。

The optimization for the configuration of first-order planar high-Tc dc-SQUID gradiometer which is widely used in unshielded environment is also involved in this thesis.

对于在无屏蔽环境下普遍采用的高温超导 dc-SQUID 一阶平面式磁场梯度计进行了图形结构的优化设计。

JOHN HEBERT Library of Congress, Washington, DC, USA

约翰 黑伯特国会图书馆，华盛顿， DC ，美国

They form usually a ring, but some fields may be composed of three matrices aI+bA, aI+cB, aI+dC, and of some special 2-order, even n-order matrices. It is a new type of hypercomplex number fields.

它们一般组成环，但3种矩阵aI+bA，aI+cB，aI+dC及某些特殊的二阶甚至高阶矩阵可以组成域，这是一类新的超复数系。

Based on a brief review on developments of number system, a new developed pattern is proposed. The quaternion is extended to a matrix form aI+bA+cB+dC, in which the identity matrix I and three special matrices A, B, C correspond to number 1 and three units of imaginary number i, j, k, respectively.

在数系发展的基础上，提出了一种新的发展模式：四元数推广为矩阵形式aI+bA+cB+dC，其中单位矩阵I和3个特殊矩阵A，B，C分别相应于数1和虚数单位i，j，k。

A novel algorithm for audio watermarking based on quantizing DCT domain is proposed,the authors design watermarking algorithm according to DC and AC DCT coefficients play different influence in robustness and inaudibility to tradeoff robustness and inaudibility better.

提出一种新的基于量化DCT域的音频水印算法，根据DC分量和AC分量在水印的鲁棒性和不可听性中起着不同的影响来设计水印算法，使水印的鲁棒性和不可听性得到更好的权衡。

Now, the factory has been to nurture and shape a workforce forge ahead in unity and a pragmatic spirit, the pursuit of excellence, and sustainable innovative management team, combined with Japan, Taiwan's technology and design their own set at home and abroad to create new advantages of similar products Vertical, horizontal injection molding machine, the product suitable for all kinds of electronic components, electrical parts, computer parts, AC and DC power cord connector, auto parts, eyewear spare parts, medical parts, stationery, artificial silk flowers, electricity, wood zipper any need to insert objects into the molding operation.

发展至今，工厂已培育和塑造了一支团结奋进的员工队伍和一个务实进取、追求卓越、永续创新的管理团队，结合日本、台湾之技术并自行设计制造出集国内外同类产品优点的新型立式、卧式注塑成型机，该产品适合各式电子零件、电器零件、电脑零件、AC和DC接头电源线、汽车零件、眼镜零件、医疗零件、文具用品、人造丝花、电、木拉链等任何需要镶入物件的成型作业。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。