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Later models included a double-step pulley for the motor and a proper countershaft assembly, thus doubling the number of available speeds and giving, according to the handbook, a range from 55 to 465 RPM in backgear and from 380 to 3050 in direct drive, which was a much more satisfactory arrangement.

稍后模型包括一个双步滑轮为电动机和一个适当的countershaft大会，因此，人数增加一倍，现有的速度和给予，根据手册，射程从55至465每分钟转速在backgear和从380到3050 ，在直接驱动，这是一个更理想的安排。

The resulting system 1 maintains or improves CPU utilization rates as CPU speeds increase, 2 provides large level 1 caches while maintaining cache access times of one CPU clock cycle, and 3 provides high CPU utilization rates for those processing applications where locality of memory references is poor (e.g., networking applications).

随着CPU速度的提高，能够保持或提高CPU的利用率，2）提供大容量一级高速缓存，并同时保持高速缓存的存取时间为一个CPU时钟周期，3）为那些存储器引用局部性不强的处理系统提供高的CPU利用率。

Hence all the cutters should be similar in size and shape to allow for larger speeds and feeds.

因此所有切削刀应该在大小上是相似的和考虑到的形状更大的速度和饲料。

In this part, the characteristics of transient responses of flexible rotor systems with arbitrarily distributed mass on isotropic or anisotropic supports passing through several critical speeds seguencially are examined. Here, the current knowledge of rotor dynamics on the eigenproblem of damped free whirling vibration, the generaliged damped mode theary, the transient forced vibration and so on combined with KBM asymptotic method in the nonlinear vibration theory is employed and extended.

作者综合运用并引伸推广转子动力学关于阻尼自由回旋振动的特征问题、广义阻尼模态理论、瞬态强廹振动等現代理论和方法，结合非线性振动理论中的KBM渐近法，提出自己独創見解和覌点，成功地建立起正回旋和逆回旋两种情况下转子通过临界点的瞬态振动一阶微分方程组，可以在临界点的邻域内从事方程的数值积分计算。

To investigate the relationship between dandification mechanism of SiO2 particles and materials performance under different friction speeds, Cu-graphite-SiO2 sintered materials were prepared through powder metallurgy. The tests were conducted on a pin-on-disk tester in speed range of

摘 要：采用粉末冶金技术制备铜石墨SiO2烧结材料，利用销盘式摩擦试验机，在摩擦速度为7.8~47.1 m/s的范围内，研究SiO2在不同摩擦速度条件下的损伤机理及其与材料性能的关系。

Police in the western town of Darmstadt said the 42-year-old Briton had evaded officers chasing him by weaving between other cars and hitting speeds well over the limit.

德国西部城市Darmstadt的警方说这名42岁的英国佬在车流里曲折穿行逃避追来的警察，时速远远超过了限速。

Conventional straight wings did not provide enough lift at high speeds and altitudes to achieve this type of range, and so the large delta wing was necessary.

传统的直翅膀没有提供足够的电梯以极高的速度和高度要达到这个类型的范围内，所以大三角翼是必要的。

In this configuration a small highly swept delta wing is added in front of the main wing for reduced drag at low speeds.

这种外形是在主翼前加上大倾角的三角翼，以减少在低速时的劣势。

The amount of dielectric loss in the material greatly affects signal integrity at high speeds.

材料中的介电损耗在高速时会大大影响信号的完整性。

While GE currently is the world leader in locomotive diesel-electric and electronic control systems technology, China currently is a leader in high-speed rail technology for speeds of 220 miles per hour.

虽然目前是通用电气机车柴油机在世界领先的电气和电子控制系统技术，中国目前是在高速铁路技术为每小时220英里的速度领先。

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。