查询词典 unit cost

Key words: Macroeconomic Time Series; Unit- root Testing; Multiple Breakpoints ; Segmented Trend Stationary; Causality

在单位根检验结果的基础上，本文还对消除趋势后的分段趋势平稳总量之间的因果关系进行了分析。

The multipeak NDR device can be widely used in multiple valued logics, and analog to digital converters. We obtain a multiple\|valued memory unit through the multipeak N...

并且利用它的折叠的I V特性，实现了一个 4位的FlashA D转换器，与传统的FlashA D转换器相比，SET MOSFET的A D转换器大大地简化了电路。

This unit is called a time division multiplexer.

这股被称为时分复用器。

This unit is called a time division multiplexer, and is illustrated in Fig.

这种设备称为时分复用，如图1-2所示。

In some systems, a specialized, intelligent interface device between a magnetic tape unit and an input/output multiplexor

在某些系统中，在磁带机和输入输出多路转接器之间的一种专用的、智能化的接口装置。

This paper introduces briefly the structure of China State Construction Engineering Corporationvideo conference system, analyses its correlative technology such as Virtual Private Network, Multipoint Control Unit, video terminal technology and function, and discusses the application foreground to video conference system.

本文简要介绍了中建总公司视频会议系统的构成，对其相关技术虚拟专用网络、多点控制器、视频终端技术及功能进行了分析，对视频会议系统及应用前景进行了探讨。

The multipoint control unit is the core equipment.

是下一代网络的核心设备之一。

Device which adds up the time during which each program, in a multiprogramming machine, is utilizing the central processing unit.

多道程序计算机中将每个程序占用中央处理机的时间加在一起的一种时钟设备。

A clock device which adds up the time during which each program, in a multiprogramming machine, is utilizing the central processing unit.

多道程序计算机中将每个程序占用中央处理机的时间加在一起的一种时钟设备。

The hydraulic pressure system of the multistation bus manufacturing machine was mainly introduced in this article,and its application method of the cutting,punching hole and bending unit were also analyzed.

本文主要介绍了多工位母线加工机液压控制系统，并对其冲孔单元、剪切单元和折弯单元的使用方法进行了说明。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。