双动的

Overhead lines of different voltage classes and extension space are arranged by adopting the mode of combining many line-type angle-type gantries with various heights and angles.

为保证供电的可靠性，结合相关设计规范，采用35kV双母线固定式高压开关柜完成配电及馈电环节，选用国内最先进的4分支微机差动保护装置来实现110kV变压器主保护。

At first,the prin ciple of BLDCM is analyzed and the model is built;then a test is performed on a tining system of close loops of speed and current;torque ripple components are r educed by controlling switching andles of the PWM.

文中首先建立永磁无刷直流电机的数学模型，以此进行转速和电流双闭环调速系统控制；并通过调节 PWM发生器的开关频率来减少转矩脉动。

The complicated oil field of karst cave and crack are controlled by limestone reservoir and the crevices-cave system, which have many characteristics such as vivid and great in style, irregular distribution, the limestone cave in crack and unhomogeneity of rock etc.

笔者力求充分利用各种开发生产的动态信息，探索研究和评价储层特征的方法及思路，主要研究成果如下：(1)结合塔河油田动静态分析和实践，将缝洞型碳酸盐岩油藏划分为三类组合模型：缝-洞系统、双裂缝系统和缝孔系统。

Brake system: it uses safe and reliable dual-loop air-break break system, the stored energy pump has the function of parking brake, the selected relay valve is reliable in performance.

刹车系统：采用安全可靠的双回路断气刹制动系统，储能分泵具有驻车制动功能，选用性能可靠的继动阀。

The equal rigidity design for the flexible joint of DTG is discussed in this poper,which derived the equations of calculating the axial and radial rigidity of two gimbal flexible joint inthis paper.

本文讨论了动力调谐陀螺仪挠性接头的等刚度设计，导出了双平衡环动调陀螺挠性接头轴向刚度和径向刚度的计算公式。

To beef up the braking, our dual stainless steel disc brake kit comes standard, featuring two vented stainless discs and a machined steel brake hub.

要加强制动，我们的双不锈钢盘式制动器套件标准，具有两个排气不锈钢光碟和加工钢制动枢纽的地位。

Combined with the disturbed state concept proposed by Desai, the consolidation line of the structured soils could be divided into two linear parts in loglog plot.

按照Desai的挠动状态理论，双对数坐标下结构性土的压缩曲线可以简化为两段直线。

By connecting the pilot valve of stepping electric motor with machinery and hydraulic servomotor device, it can form the stepping microcomputer-based governor for water turbine.

以工业控制级单片机 80C552 为核心，开发出集测频、调速、调功、开停机操作、故障诊断及与上位机通讯等功能于一体的双微机型电气调节器，并与抗油污能力强、定位精度高、漏油量小的步进电机式引导阀及机械液压随动装置相配接，构成了水轮机步进式微机调速器。

The pressure adjusting valve 1, piston 2, moves up to close the contact of micro-switch 5

电器面板显示，在这样的压力下完成了倒线。对于安装有电控换相起的双线系统，微动开关5

Birefringence crystal can not only be moved and pushed but also be rotated by the radiation pressure. Based on it, a motor which is drived by laser can be developed in future.

文中还对双折射晶体的旋转操作进行了初步的研究，在此基础上可望研制光致动微马达。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。