查询词典 D.A.

The key technologies include A/D conversion circuit with double integral, sign processing software for the microcomputer, eliminating zero excursion and the interference for digital filter, display precision adjusted and real-time graduation.

其关键技术包括：双积分A/D转换电路、单片机信号处理软件、消除零漂、排除干扰的数字滤波、显示准确度调校和实时标度变换等技术。

It incorporates the temperature measurement , A/D changes Yu an integral whole, have merit such as the Shan highway structure , figure amount output.

它集温度测量，A/D转换于一体，具有单总线结构，数字量输出等优点。

The key technologies include A/D conversion circuit with double integral, sign processing software for the microcomputer, eliminating zero excursion and the interference for digital filter, display

其关键技术包括：双积分A/ D 转换电路、单片机信号处理软件、消除零漂、排除干扰的数字滤波、显示准确度调校和实时标度变换等技术。

The key technologies include A/D conversion circuit with double integral, sign processing software for the microcomputer, eliminating zero excursion and the interference for digital filter, displayprecision adjusted and real-time graduation.

其关键技术包括：双积分A/ D 转换电路、单片机信号处理软件、消除零漂、排除干扰的数字滤波、显示准确度调校和实时标度变换等技术。

DCM071 three-phase digital electricity tester refers to relevant standards, controlling by high-speed SCM, multiplication circuit and integral A/D conversion can achieve synchronized measurement about real virtual value and frequency of three-phase voltage、current、power.

DCM071三相数字电量测试仪参照相关标准，采用多微高速单片机控制，由乘法电路及积分A/D转换实现同步测量三相电压、电流、功率的真有效值和频率。

The governing equation of in-plane vibration of cable-restraint system is derived by means of D'Alembert principle, and then those partial differential equations are transformed into a set of ordinary differential equations by Garlerkin method. The method of Runge-Kutta integration is applied to solve the equation. The simulation analysis is made to prove that this vibration control has obvious damping effects and then the influence of cable tension, support mass, natural frequency and spring stiffness on the damping are discussed. Eventually, the approximate analytic solution of the optimum damping parameter is obtained to provide a simple and effective reference and design method for the engineers.

通过D'Alembert原理建立拉索－弹性约束系统振动方程，通过Galerkin方法将偏微分方程转化为常微分方程，应用龙格－库塔积分法求解方程；经过仿真分析，验证了该振动控制具有明显的减振效果，并且讨论了初始拉力、支座质量、振动频率及弹簧刚度对减振效果的影响；最后给出了计算最优阻尼参数的近似解析式，为工程师提供了简便有效的参考依据及设计方法。

The studyshows that Chetaev's model for mechanicalsystems with non-holonomic con-straints can be reduced to three essential factors:(1)a kind of direct sum ofjet bundles according to the constraints,(2)D′Alembert's principle,(3)pos-tulate of ideal constraints.The first among the three factors only has geomet-ric significance and the second is a fundamental physics principle independentof any constraints.

研究表明，非完整约束力学系统的Chetaev模型归结为三个要素：(1)射丛按约束的直和分解；(2)D′Alembert原理；(3)理想约束条件，其中(1)仅具有几何意义，(2)为与约束无关的基本物理原理，而(3)是对约束力学系统的限制条件。

A man without conversation was liable to find himself devalued, whatever his other qualities:"In England it was enough that Newton was the greatest mathematician of the century," wrote Jean d'Alembert, a French philosopher and mathematician;"in France he would have been expected to be agreeable too."

一个缺少交谈的人很容易发现自身已经贬值，不管其他品质如何优秀。法国的哲学家数学家Jean d'Alembert写道：在英国牛顿被普遍认为是本世纪最伟大的数学家，不过如果到了法国的话，则只能指望被一般认可了。

One important variation is to only add the damping factor d to a single page, or a group of pages.

一个重要的变化是只添加阻尼因子 d到一个单一页面，或一组网页。

The function of the peripheral circuit controller was to manipulate a/d sampling and to buffer data.

而外围电路控制器的主要作用则是控制a/d芯片采样和上、下游流动噪声信号的数据缓存。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。