查询词典 acceleration note

This paper measured the constitutive relation of soil in the condition of the low stain-rate by Split Hopkinson Press Bar technology. It offers the reference for study in high stain-rate in the future. And simulated the explosion between soil and concrete by finite element dynamic analysis software LS-DYNA3D. Finished the numerical simulation for power of exploding between soil and concrete in different position of detonator and different scale model. Set out the curves of displacement, velocity, acceleration and pressure of different position. Obtained the destructibility of concrete target in different explosion condition. It offers data reference for theory studying and engineering designing.

本文首先利用分离式Hopkinson压杆实验技术测定了土在低应变率下的本构关系，为以后进行较高应变率下的研究提供了参考；后面着重利用三维显式非线性有限元动力分析软件LS-DYNA3D对土壤混凝土介质中的爆炸进行了数值模拟，采用土壤混凝土分层介质模型，完成了不同装药位置、不同缩比模型的混凝土模型中爆炸威力的数值模拟，测定了不同情况下的压力曲线及典型位置的质点位移、速度、加速度和压力，得出了混凝土靶在各种不同爆炸条件下的破坏情况，为理论研究和工程设计提供了数据参考。

This thesis suggests some ways for middle school English teachers with the background of the new curriculum according to relevant theories on teacher professional development, linguistics,second language acquisition and didactics in English language. The ultimate purpose of this thesis is to improve teaching quality through the improvement of teacher's quality and acceleration of teacher's professional development course.

本文以新一轮课程改革为契机，根据教师专业发展及语言学、二语习得、英语教学论等相关理论，将教师专业发展与英语学科挂钩，提出了在新课程背景下中学英语教师专业发展的途径，旨在提升中学英语教师素养并促进其专业化发展进程，最终达到提高教学质量的目的。

In the case of dielectric breakdown, a different type of acceleration occurs

在介质击穿的情况下，出现了一种不同类型的加速。

Applications of differential calculus include computations involving velocity and acceleration , the slope of a curve, and optimization .

应用微分包括涉及计算速度和加速度，斜率的曲线，与优化。

This paper deals with a simple method for measuring the acceleration of the picker by means of an RC differential circuit composed of resistor and capacitor.

本文提出用电阻与电容组成的RC微分电路来测量皮结和梭子的加速度的方法。

If the measurement data are demarcated, the acceleration curve can also be calculated by solving the second order differential coefficient of measurement curve.

如果对测量值进行标定，还可以通过对测量值曲线求二次导数得到振源的加速度曲线。

So far, the existing mechanisms, such as diffusive shock acceleration and others, still present problems in explaining these particles.

目前一些现有的机制，如震波扩散加速与其他，在解释这些粒子上仍存在问题。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

The concept and properties of the relational analysis of C-mode between continuous system and discrete system are proved abstractly on the basis of the identity. The antithesis and difference of the displacement, the velocity and the acceleration of different objects as respect motion situation.

应用数学方法比较不同事物之间在反映各自运动态势的位移、速度、加速度方面的同一性、对立性、差异性关系的基础上，抽象论证了连续系统与离散系统的C型关联分析的概念及性质。

At last, based on the discrete state equation, two kinds of adaptive inverse control system were set up to control the acceleration of the countertop under the random excitation.

最后，借助于振动台的离散五刚体模型，将振动台的台面加速度作为控制目标，进行了复合实验系统在随机输入作用下的控制仿真。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。