查询词典 force

Various vectors have also their different linear properties, for example: position, velocity, force, electromagnetic potential etc., are 1-linear; moment of momentum, moment of force, electromagnetic intensity, etc., are 2- linear.

各种矢量还有它们不同的线性，例如：位置、速度、力、电磁势等等，是1-线的。动量矩、力矩、电磁场强度等等，是2-线的，2-线矢又是两个不同1-线矢的叉乘积。

Theactuator is suitable for installation on diesel, gasoline, or naturalgas engines with fuel system force requirements of less than 13 pounds(58 N) of force.

致动器是适合安装于柴油，汽油，或天然气发动机燃油系统的部队的要求，少于13磅（ 58 n ）的武力。

At this time the Suns gravitational force partially offsets the Moons gravitational force causing lower than normal tides called neap tides.

这时，太阳的部分引力抵消月亮的引力，形成比平常还低的潮水，称为小潮。

Basing on the condition of different siding press regulations,simulated the distribution of rolling force,displacement nephogram and strain nephogram in different deform field systematically,the rules of rolling force and time were yeild.

在不同侧压规程的前提条件下，模拟了不同变形区内轧制力、位移和应变的分布情况，得到了轧制力随时间变化的规律。

By using a soil modeling of three axes symmetry and considering three dimensions wave effect ,the longitudinal vibration characterisitic is analyzed on condition that a vertical force being harmonious and stimulating force is loaded upon the whole newel stake in the damping soil of homogeneous and detained material.

从三维轴对称土模型出发，考虑桩周土体的三维波动效应，对均质滞回材料阻尼土中完整端承桩在垂直协和激振力作用下的纵向振动特性进行分析，求解得到桩顶频域响应解析解、复刚度和速度导纳，利用卷积定理和傅里叶逆变换，求得半正弦脉冲激振力作用下桩顶速度导纳时域响应半解析解。

Newton's second law of motion describes force. It says force equals the mass of an object, multiplied by the change in speed it produces in an object.

第二定律：F=ma，物体上的外力=物体质量*加速度，就是说物体的加速度，与施加在该物体上的外力成正比，定义了物体的质量就是物体惯性大小的量度。

There is a typical non-conservative system called accompanying force system, in which the force changes with the deformati.

有一类典型的非保守系统，作用于系统的非保守力随物体的变形而变化，这种系统称为"伴生力"系统，本文研究的非保守系统特指"伴生力"系统。

Analyses on condition for generating the natural convection show that the natural convection results from the non-conservative body force, so, its enhancement and control can also be achieved by active control of the body force acting on the fluid.

自然对流换热的强化与控制随着微电子和微加工技术的快速发展受到越来越多的关注和重视，但现有技术主要集中于自然对流换热表面的结构设计和优化。

Influence of Magnet on Deposition Uniformity of Pulsed Ion Source;2. Natural convection is induced by non-conservative body force, which can be gravity, centrifugal or magnet ic force; and enhancement by applying magnet ic fields is a new technology in heat transfer.

自然对流是由非保守体积力驱动的流体流动，这种体积力可以是重力、离心力以及电磁场力等；通过外加梯度磁场来影响流体的流动，产生强化换热效果的方法是一种新型的强化技术。

Based on the fact of rural surplus labor force transfer in China, the author discusses the question of non-return of rural surplus labor force transfer.

本文从当前农村剩余劳动力转移的现实情况出发，研究剩余劳动力转移的非回流问题。

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。