查询词典 direct

The mechanism is composed of two ball screws, U-type linear rails, linear bearings and flexible couplings. The permanent magnetic direct current motors are used as actuators. The rotary encoder is used to measure the angular position of the DC motor. The digital controller is implemented on the personal computer and a motion control card (EPCIO-6000). The objective of this thesis is to realize precise positioning control using a real-time motion control system on an X-Y table.

机械结构包括有滚珠导螺杆、U型线性滑轨组、线性轴承及可挠性连轴器等；致动器是采用永磁式直流马达(permanent magnetic direct current motor)；感测器是使用光学式旋转型编码器来量测马达旋转的角度；控制器则是以个人电脑为控制核心，搭配运动控制轴卡(EPCIO-6000)所组成。

Enjoin, direct, and instruct do not connote the authority of command or order, but they all imply compliance.

Enjoin， direct与不包含或的权力，但它们都表示顺从。

Direct memory access is one effective solution that most processors employ.

直接存储器存取(Direct Memory Access， DMA)方式是大多数处理器中普遍采用的提高数据传输速率的方法之一。

To meet the tendency,"Direct Memory Access" will play a more and more important role in an embedded microprocessor.

在这种发展趋势下，存储器直接存取（Direct Memory Access，简称DMA）技术将有愈加重要的应用。

This feature is for the hard disk and CD-ROM drive Direct Memory Access (DMA, Direct Memory Access acronym) to maximize system performance upgrade, because personal computers are now the biggest bottleneck is the disk input and output.

这个特性是针对硬盘以及光盘驱动器的直接存储器访问(DMA，Direct Memory Access的缩写)来最大限度提升系统性能，因为现在个人计算机的最大瓶颈就是在磁盘的输入输出上。

"Our 3D imaging technology allows us to document complex objects down to the last intricate detail," explains Michael Raphael, president of Direct Dimensions.

"借助公司的3D成像技术，我们能够对复杂的对象进行细致入微的记录，"Direct Dimensions公司总裁麦克尔·拉斐尔先生对公司的技术进行了阐述。

The procedure can be used to study VC direct draw programming, game programming can be used as data entry.

该程序中可以学习用VC实现direct draw编程，可以作为游戏编程的入门资料。

Introdusing the InterLibrary Loan Service System of the Ivy League school and the Ohio Library and Information Network in the United States.Analyzing the main features,operation model and successful experience of Direct Borrowing and OhioLink,inclusing the concentrate virtual, individual sharing,direct borrowing and remote circulation service.Discussing the developments of InterLibrary Loan Service based on Network enviroment and to sharing these experiences and inspiration with the domestic colleaques.

以美国长春藤盟校馆际互借服务系统Borrowing Direct和美国俄亥俄州图书与信息合作网OhioLink为例，介绍了以集中虚拟、个体分享、直接借阅和远程流通为主要特征的网上跨馆图书互借服务解决方案的运行方式及成功经验，对网上图书馆际互借服务的发展动态及特点进行了探讨，以期为国内正在建设、发展和应用中的同类服务提供启示与参考。

The paper proposes two new dimension reduction algorithms: The First is On the Expected Distortion Bound of Direct Random Projection. The second is Anchor points based Isometric Embedding under least square error criterion. On the Expected Distortion Bound of Direct Random Projection has a time complexity of O.

本文分别提出了两种新的维数约减算法：(1)基于期望扰动的直接随机映像算法On the Expected Distortion Bound of Direct Random Projection，简称DRP(2基于锚点集的最小平方误差等距嵌入算法(Anchor points based Isometric Embedding under least square error criterion，简称AIE)。

In the last new years , as the demands of wireless communication system grows rapidly , the bands of microwave frequency had been saturated with various communication applications . To achieve wider spectrum for high-speed and high-capacity transmission , bands of millimeter-wave frequency are the solution of this problem . The advantage of MMW wireless communication systems is wider bandwidth comparing with microwave communication systems . To utilize the spectrum efficiently , many methods of complexly digital modulation is proposed . The more complex modulation , the higher linearity is required , and more various phase of signals are required to accomplish process of modulation . Therefore high-linearity and quadrature-phase modulator and demodulator are the emphasis of this thesis . For high level of integration , high performance and low cost , this chip is fabricated by the complementary oxide semi-conductor 0.13um process . A compact size of direct down-conversion and direct up conversion circuits will be presented in this thesis .

近年来随著无线通讯产业的蓬勃发展，微波频带已经趋近於饱和，为了追求更宽的频谱来达到更快传输速率及高资料容量的传输，宽频的毫米波频段提供了解决此问题的途径，毫米波无线通讯系统提供了相对於微波通讯系统宽频的优点，且为了更有效的使用频谱，各种不同且复杂的数位调变方式及方法被发表出来，越复杂的调变方式其所需的线性度越高，且需要更多不同的相位讯号来完成调变的过程，因此高线性度及四相位的调变及解调器将是此篇论文的研究重点，为了达到高整合性，高效能，及低成本的电路设计，我门利用互补式金氧半导体制程来完成此电路设计，因此一小面积的直接降频(Direct down-conversion)及直接升频(direct up-conversion)电路将在文中介绍。

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。