back-pack pump

Objective To study the influence of walking with weight bearing on physiological function of pupils and middle school students.

目的　了解中小学生背负重量行走时对其生理功能的影响。

There studys on the former six male athlete who attend the 60 and 66kilo level in the national male judo championship,through watching the match and the video,also doing skill statistics,analysis the two level s athlete using beifutou in the championship.

文章以2006年全国男子柔道冠军赛60 kg级和66 kg级的前六名运动员为研究对象,观摩比赛和录象,并做技术统计,对这两个级别前六名运动员在比赛中背负投技术的运用情况进行分析,主要阐明背负投技术运用在男子柔道中小级别比赛中的重要性,为训练竞赛提供参考。

This article study on the former six male athlete who attend the 60 and 66kilo level in the national male judo championship ,through watching the match and the video ,also doing technical statistics, analysis the two level s athlete using beifutou in the championship .

文章以2006年全国男子柔道冠军赛60kg级和66kg级的前六名运动员为研究对象,观摩比赛和录象,并做技术统计,对这两个级别前六名运动员在比赛中背负投技术的运用情况进行分析,主要阐明背负投技术运用在男子柔道中小级别比赛中的重要性,为训练竞赛提供参考。

The research status,types and development trend of digging machines at home and abroad are introduced and an overall introduction to the design of a new backpack digger is made.

介绍了挖坑机械在国内外的研究现状、挖坑机的类型及其发展趋势,并在此基础上对新型背负式挖坑机的设计做总体介绍。