查询词典 formidable force

If only the interatomic force are considered, atomic stress amounts to the potential density in the resultant force field generated by the neighboring atoms, and atomic elastic constants equals to the potential density increment in the same resultant force field.

如果只考虑原子间作用力的影响，原子应力等于该原子在周围邻域原子合成张量力场中的势能密度，原子弹性常数等于发生单位应变时原子在邻域原子合成力场中势能密度的增量。

A fuzzy controller is designed, of which the input is the force error and the change of force error which are transfered from the error of interelectrode gap by using another BP NN trained by the pair of the gap-force data gathered in the test.

用这些力一问隙数据对训练一个BP神经网络，通过训练好的网络和在线测得的力实现间隙的在线预报，并设计了一个模糊控制器。

A fuzzy controller was designed,of which the inputs were the force error and the change of force error which was transfered from the error of interelectrode gap by using another BP NN which was trained by the pair of the gap-force data gathered in the test, the output of controller was the increment of feed velocity.

与阴阳极间间隙的关系；采集电解加工过程中阴极表面上的力信号，经过信号处理后用其训练一个BP神经网络，实现间隙的在线检测；设计了一个模糊控制器，把间隙的误差转化为力的误差，将误差的变化信号作为模糊控制器的输入，将进给速度的增量作为模糊控制器输出。

The results show that, the distribution of magnetic field and electromagnetic force in the aluminum film on the cathode slope are in symmetry to the long axis of the cell, especially the magnetic force is in the same direction as the gravity force, which is in favor of the aluminum discharging from the cathode slope. The highest fluctuation of aluminum pad surface in the accumulation sump is 0.021 m, which still remains within the safe range, and will not cause interpolar short circuit, so a normal operation process could be maintained with the same bus bar configuration as the current 75 kA aluminum reduction cells.

结果表明：阴极斜坡表面电磁场和电磁力场分布基本呈沿电解槽长轴对称分布，且电磁力与重力方向相同，这有利于阴极表面电磁力向聚铝沟排放，而在电磁力作用下，聚铝沟内铝液波动最大幅度为0.021 m，仍保持在安全范围之内，不会引起两极短路现象的发生，表明在现有75 kA普通预焙槽母线配置方案下，可以维持导流型结构电解槽的正常运行。

For the sake of accurately estimating the contact force, we describe a new method, in which the contact force is considered as a jump function of time, and by use of response to jump function, the history of impact force is detected in the duration of rotor contacting with stator.

为更准确地获得接触作用力，本文将接触过程中转子所受作用反力函数视为在微小时间间隔下的阶跃函数，提出一种计算接触作用力的新模型，利用系统对阶跃函数的响应可以得到转子与定子碰摩时的切向摩擦力与法相作用力的时间历程及相应的位移、速度量。

Air Force officials announced May 15 that Lackland Air Force Base, Texas, was the preferred alternative for the permanent location of 24th Air Force.

空军官员说， 5月15日宣布，拉克兰空军基地，得克萨斯州，是首选替代的永久所在地24空军。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed. Finally, the calculated figure was compared with the ideal paraboloid and comparison shows that more accuracy would be achieved by multi-electrode control.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

The results of lattice beam internal force calculated method based on double parameter groundsill model are more approach the experiment measured values because of consideration of the pass of shearing force in soil, and its calculated workloads are similar with the method of winkler elastic foundation. Besides, the thesis also discusses the moment of torque affected results on node stress situation and the correction of stress value at the bottom of cross node of lattice beam. Due to the repeat calculation of node area during internal force calculation, the stress value of the bottom of beam is lower, this may lead the calculated value unsafe, but the corrected stress value will more approach to practical situation.

对格构梁的内力计算提出基于双参数地基模型的格构梁内力计算方法，其计算结果表明，双参数地基模型上的格构梁内力由于考虑土中剪力的传递更加接近于试验实测值，其计算工作量与winkler弹性地基梁法相当，此外，文中还探讨了扭矩作用对格构梁节点受力情况的影响结果以及格构梁交叉节点底部的应力值的修正，由于内力计算过程中节点处的面积被重复计算，使得梁底应力偏小，可能导致计算结果的偏于不安全，修正后的应力值更接近于实际情况。

Atomic force/friction force microscope, microcosmic tribological properties tester of magnetic record system and tester of surface force were developed and criterion of the testers were established.

研究并提出了薄膜润滑状态下润滑油的粘度、速度和压力与失效的关系及相应的润滑状态图。

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。