查询词典 main force

Rotate according to the car the inertial moment of couple of quality is OK translate into is linear the principle of the force of translation quality, regard testing stand as the jumping-off place of the design with inertia imitate, those who put forward testing stand is basic arrange plan, elaborated function of apply the brake of car bridge assembly the main job principle of online testing stand, gave out the computational process of inertial flywheel.

根据汽车旋转质量的惯性力偶矩可以转化为直线平移质量的惯性力的原则，以惯量模拟作为试验台设计的出发点，提出了试验台的基本布置方案，阐述了车桥总成制动性能在线试验台的基本工作原理，给出了惯性飞轮的计算过程。

On the base of roundly analyzing and studying phase relation of stator magnetometive force and rotor one of brushless DC motor,the main purpose of this paper is to analyze thoroughly positive and negative rotation logic layout of sensorless BLDCM,and explains the differences between BLDCM and sensorless BLDCM.

依据无刷直流电动机定转子磁势的相位关系，深入分析无位置传感器无刷直流电动机正反转控制的逻辑编排，并分析了无位置传感器和有位置传感器正、反转控制的不同。

Differential Quadrature Method, one of numerical methods of solving boundary problem of differential equation is introduced in this paper. By using DQM, the dynamic stability of pipes conveying fluid and rectangular plates under the action of non-conservative force is studied. The main research work is as follows.

本文首先介绍了求解微分方程边值问题的一种数值方法—微分求积法，然后采用微分求积法分别对输流管道和非保守矩形薄板的稳定性问题进行了分析研究，具体有如下三方面的研究内容。

The main results can beexpressed as follows:(1)Based on πtheory, some affected factors about wave forces are given, and therelation between affected factors and wave forces is analysised by experimentalresults.(2) The distribution of wave press at representative time and reflection nature aregiven and their variety charactes are discussed by experimental results.(3)By comparing the wave forces of quarter-circular breakwater and semi-circularbreakwater under the same wave conditions,some approximately wave forcesexpressions of quarter-circular breakwater are given.(4)Based on VOF method to trace water free surface,solve numerical value ofRANS equation,and get the distributions of flow field and wave press ofquarter-circular breakwater at the same time during one period,the mechanism ofwave force is also discussed elementarily.(5) Based on the result that RANS equation of numerical simulation agree wellwith experimental results,a new approach to study hydraulic natures of quarter-circular breakwater is provided.

其主要结论如下：一、通过π定理，确定影响波浪力的无因次参变量，根据试验结果对其影响因素进行分析；二、基于模型试验，给出典型时刻圆弧面防波堤的同步波压分布和反射特性，讨论它们的变化特点；三、通过相同条件下圆弧面防波堤与半圆型防波堤两种堤型试验波浪力的比较，给出了圆弧面防波堤波浪力的近似方法；四、利用VOF法追踪自由水面，数值求解RANS方程，得到圆弧堤堤体周围的流场和压力场，初步分析了速度涡流与压力场的相互影响；五、对比数值分析与试验结果，探讨数值方法研究圆弧面防波堤水力特性的可行性，提供新的研究途径

Foreign Trade Department of the company strong technical force, unique paper-making technology and advanced paper making equipment, specializing in the production of specialty paper products, the main varieties are: qualitative filter paper, quantitative filter paper, chromatography paper, automotive filter paper, filter oilpaper, steel paper, wear-resistant flooring paper, chemical fiber filter paper, pH paper, rubbed mirror paper, silk paper, seed germination paper and electrolytic capacitor paper, paper dust bag; variety is complete in specifications, special specifications can be custom-made, products widely used in scientific research, industry, agriculture, medicine and public health and environmental protection departments.

公司以雄厚的技术力量、独特的造纸工艺和先进的造纸设备专业生产特种滤纸系列产品，主要品种有：定性滤纸、定量滤纸、层析滤纸、汽车滤纸、滤油纸、钢纸、地板耐磨纸、化纤滤纸、pH试纸、擦镜纸、绢花纸、种子发芽纸、电解电容纸、吸尘袋纸等；品种规格齐全，特殊规格可订做，产品广泛应用于科学研究、工业、农业、医药卫生和环保等部门。

The main viewpoint that force holds out this kind of means is:"Time has price, working no more than is used namely ' time energy ' go making the money that takes a certain level, do not say Orphean, do not spend money namely go buying you ' time ' and ' energy '"

力挺这种方式的主要观点则是："时间是有价的，工作无非就是用'时间精力'去挣取某个标准的金钱，说不好听了，不就是用钱去买你的'时间'和'精力'吗"

The main findings are that the reason why China chose to show force was in order to enhance China's own international status, the reason why the U.S. failed to deter China was because of its overcommitment in cooperating with China and low credibility in defending Taiwan, and the reason why China deliberately brought about the crisis was in order to increase its diplomatic influence.

主要的发现如下：第一、中国为了追求其在国际社会中地位之提升，而选择展示武力；第二、美国对中国之所以吓阻失败的原因是因为过度的合作承诺和低度的防卫承诺；第三、中国作为一个崛起的大国故意制造台海危机，以确保其外交影响力的增加。

The main results gained in this dissertation are as follows:1. The vector theory which originates from parallelogram rule of velocity and force is inspected in detail.

主要研究成果如下：一、较深入地考察了起源于力和速度的平行四边形法则的向量理论。

Structural matter drops to hit water with fixed rate phut from certain height, inchoate and main the structure that attacks water process in the light of phut is answered begin research, and press mutation of field of force and Xing Bo to wait to study however to entering the underwater after water less, and add with each passing day as large bridge and marine project much, the construction in these projects and the phenomenon that phut of large construction content also appeared to hit water in use process, like Guangdong 9 rivers big bridge is bumped to break down after collapsing, large area bridge floor falls into surface to wait, the meeting such as mutation of field of pressure of the underwater after this kind of phut hits water and Xing Bo is right all round structural products gives birth to certain influence, evaluate this kind of influence to have real project sense to construction and design.

结构物从一定高度落下以一定速度砰击水面，早期主要针对砰击入水过程的结构响应开展探究，而对入水后水下压力场突变和兴波等却探究较少，而随着大型桥梁和海洋工程日渐增多，在这些工程的施工和使用过程中也出现了大型结构物砰击入水的现象，如广东九江大桥被撞垮塌后大面积桥面落入水面等，这种砰击入水后水下压力场突变和兴波等会对四周结构物产生一定影响，评价这种影响对施工和设计具有现实的工程意义。

The pigweed studying law , allocation , matters needing attention , scene pedagogy; teaching method by four aspect infant English discusses the main body of a book , English teaching is that are one extraordinary as well as discipline having emotion, but infant affection enriches, the affection to the teacher sometimes spends the affection having done to whose discipline, the student's emotion factor is that the successful English teaching inner drives a force, only have mobilize the student's emotion factor, inspire active emotion of student, ability raises the result that infant English studies.

本文通过四个方面幼儿英语学习规律，定位，注意事项，情景教学法莱论述，英语教学又是一门非常带有情感的学科，而幼儿感情丰富，对教师的感情往往化作了对其学科的感情，学生的情感因素是英语教学成功的内驱力，只有调动学生的情感因素，激发起学生积极的情感，才能提高幼儿英语学习的效果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。