balkline是什么意思

用法例句

Kinematical analysis on the take-off technique of some Chinese elite male high jumpers;

现阶段中国部分优秀男子跳高运动员起跳技术的运动学分析

A Comparative Analysis of the Horizontal Velocity Changes in the Course of Approach and Take-off for Chinese and Foreign Elite Female Triple Jumpers;

中、外优秀女子三级跳远运动员助跑以及起跳过程中水平速度变化特征的对比分析

kinetic Analysis of technique of take-off of three jumping of triple jump of Li-YanXi;

三级跳远运动员李延熙三跳起跳技术的运动学分析

The aims to tell briefly how to instruct approching and take off in straddle high-jump, according to university student s characters and the present high-jump situation in the world.

根据当今世界跳高技术发展的现状，结合普通大学生的特点，就俯卧式跳高的助跑和起跳技术的教学做了简单介绍。

The author thinks that absulute speed,fast take off and take off movements are the good ways to improve the results.

认为提高绝对速度能力是提高跳远成绩的前提 ,提高运动员快速的起跳能力是关键 ,提高起跳动作的各环节质量对提高跳远成绩有重要促进作

On jumping time for getting reboarding and its application;

试论抢篮板球的起跳时机及运用

The moment of take-off can be caught,and the jumping acceleration and velocity are obtained.

首先利用离散小波分解信号,对时频小波变换相关算法进行改进,只对能量集中的低频逼近信号进行相关估计,避免了高频干扰,从而推算出运动员的离板时刻及起跳加速度和速度。

Phase characteristics are important to the jumping quality of spike in beach and indoorvolleyball.

运用运动生物力学手段对沙滩、室内排球扣球起跳时相特征进行比较研究,结果发现:沙滩排球上步扣球起跳阶段依据人体下肢肌肉工作形式以及重心速度随时间的变化可划分为5个部分,即加速缓冲、减速缓冲、等长制动、加速蹬伸和减速蹬伸。

The kinematic analysis on takeoff technique between Chinese female jumper and world elite jumper in high jump;

中外优秀女子跳高运动员起跳技术运动学指标的对比分析

Velocity characteristics of last two steps in approach and takeoff of elite female triple jumpers in China;

我国优秀女子三级跳远运动员助跑最后两步与起跳速度特征的研究

Influence of different approach distance on technique of takeoff of pole vault;

不同助跑距离对撑竿跳高起跳技术的影响

Kinematics Analysis of Jump in Spike by Elite Sportsmen in Beach Volleyball;

对优秀男排运动员沙滩排球扣球起跳动作的运动学分析

Through shoot available technology on thirteen excellent high jump athletes during the process of competition in recent five years.

通过对目前5年我国13名优秀跳高运动员在比赛中有效技术的拍摄,运用运动生物力学的方法,以我国优秀男子跳高运动员在比赛中技术的影片解析所得运动学参数为依据分析比赛中助跑、起跳特别是杆上技术,研究得出正确的起跳技术是顺利过杆的保障,同时通过改变身体部分环节的位置主动降低部分肢体,而升高另一部分肢体,达到提高成绩的目的。

Based on the present status of long jump and documental data and mathematical statistics,this paper analyzes the running speed,rhythm,use rate of speed and landing,cushioning,legging,covering of gravity move in the jump course,so as to find out some factors affecting the result of long jump.

根据现阶段跳远运动现状,运用文献资料和数理统计的研究方法,对助跑速度、节奏、速度利用率以及起跳过程中的着地、缓冲、蹬伸、重心移动的扇面等方面进行分析,找出影响跳远成绩的一些因素。

Using the documentary datum and comparative method, the author studies some technology factors of Chinese-foreign long jumpers at the absolute speed, run-up speed, rate of the speed usage, take-off ability, etc, and analyses the existing diversity, based of these, the author makes some proposal for solving questions and increasing achievement.

本文运用文献资料和比较分析等方法,对中外高水平跳远运动员的绝对速度、助跑速度、速度利用率、起跳能力等几个技术因素进行探讨,分析了其中存在的差距,在此基础上提出了解决问题、提高运动成绩的建议。

The parameters launch angle θ\-0,maximum height H_(1) and maximum path le.

本文对高速摄影的沙粒轨迹进行曲线拟合,从拟合曲线反求出沙粒的起跳角θ0、上升段跃高H1、上升段跃距L1、沉降角θt、下降段跃高H2、下降段跃距L2,并对各参数进行统计分析,得出各参数间的函数关系式,为进一步研究颗粒跃移运动过程提供基础。

Assessment indices of take-off techniques in long jump;

跳远起跳技术评定指标的再研究

Basing on the characteristics of the take-off techniques for Fosbury style high jump in such 3 aspects as the athlete′s run speed,effect of swinging leg and actual effect of takeoff leg,the author revealed the laggard cause of Fosbury style High-Jumping in china is the little uprightness rate of jumpin.

采用文献资料法、生物力学方法、数理统计法和数理分析法分别从助跑速度、摆动效果、蹬伸实效性三个方面对中外优秀男子跳高运动员起跳技术的运动学特征进行深入的比较分析,发现起跳的过程中垂直速度偏小和摆动腿角度角速度慢是导致我国跳高成绩落后的原因。

The authors made a comprehensive review of the long jump research on approach speedand take-off technique.

本文对跳远项目助跑速度与起跳技术的理论研究现状作了全面的回顾,分析认为,起跳技术和与之紧密联系的助跑速度一直是跳远理论的研究重点,对跳远起跳技术动作结构的不同认识反映了不同时期的技术要求。