查询词典 percussion hammer

After analyzing factors impacting the water hammer, the paper set up the water hammer mathematic model, apply character line method and ADINA software to solve model.

本文在分析影响水击因素的基础上，建立了水击效应的数学模型，并用特征线法以及ADINA有限元方法对水击数学模型进行了求解。

The hammer handle with foam pattern of hammer-head is placed in the sand mold when molding.

造型时锤柄预先放置在砂型中，锤端和浇注系统内浇道的成型采用消失模。

Rotating velocity is the key for hammer throw ing the faster of the rotaing velocity is,the higher of the hammer throw is.

速度是掷链球旋转过程中的主要技术指标，也是提高链球运动成绩的关键。

Purpose: The purpose of this study was to compare the curvature radius of different performance (63.20 m and 68.46 m) of hammer throw. Methods: The subject, who is the present record holder of hammer throw in Taiwan.

目的：本研究的目的在以学方程式求得链球运动时链球轨迹的曲半径，并比较同链球成绩（63.20及68.46公尺）的曲半径变化，藉此了解选手在动作过程中对链球的放情形。

Results: The results indicated that the patterns were completely different between two performances of hammer throw. The curvature radius of better one was more periodic than the other one, and was larger at the highest points and the lowest points of the orbit during hammer throw.

结果：结果显示在二次链球投掷表现时，链球进轨迹之曲半径变化型态完全同，成绩较佳者的曲半径变化较有周期性，在链球最高点和最低点的曲半径较大。

In 1972, the Pentagon Red Star - is the ancient symbol of Vulcan Vulcan - have been added up. In 1992, the eve of the demise of the Soviet Union, just as East Germany before the demise of the national flag be removed from the hammer and sickle emblem, like a harbinger of the Russian hammer and sickle emblem was on the "Russian Federation" to replace the word.

1972年，五角红星——古代是火神伏尔甘的标志——被加了上去。1992年，苏联灭亡前夕，就象东德灭亡之前从国旗上取消镰刀锤子国徽的预兆一样，俄罗斯国徽上的镰刀锤子也被&俄罗斯联邦&的单词取代。

We call you ball-peen hammer-- a little hammer for a little man.

我们叫你圆头锤小矮子就叫小锤子

The device has been developed with the use of aerodynamical principle, measuring technique for feeble signal, and integration of machine-electricity. The gas percussion, rigid impact, and cell injury can be produced by altering impact tip.

应用空气动力学原理、微弱信号检测技术和机电一体化的方法研制而成，通过更换撞击头可实现柔性撞击、刚性撞击和细胞损伤，通过眼、脑、肺和细胞进行实验研究。

When the percussion keyboard Enter the Alt key combinations, the implementation of the corresponding operation.

当敲击键盘上的Alt+Enter组合键时，执行相应的操作。

Leading a virtuosic ensemble made up of pipa, di ze, sheng, erhu, zhong and da ruan, and percussion, Liu Xing creates a sound that ranges from blissful romantic lyricism to jarring angular atonality, yet retains a fundamental inter-relation.

领导着一支有琵琶，笛子，笙，二胡，中阮，大阮及打击乐器组成的德艺双馨的乐队，刘星创造的声音从美妙抒情的乐曲，到有棱有角，震撼人心的曲调，都保留了基本的内在的联系。

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。