本文对我国8 运会前3 名优秀男子蝶泳运动员和第26 届奥运会蝶泳比赛前6 名运动员的出发反应时、出发15 m ,途中游的划频与划幅,转身前后,7.5 m 技术以及冲刺到边进行了对比分析。结果表明,中国蝶泳运动员出发技术较好,划频能力不如国...本文对我国8 运会前3 名优秀男子蝶泳运动员和第26 届奥运会蝶泳比赛前6 名运动员的出发反应时、出发15 m ,途中游的划频与划幅,转身前后,7.5 m 技术以及冲刺到边进行了对比分析。结果表明,中国蝶泳运动员出发技术较好,划频能力不如国外优秀运动员,划幅较大,但划频与划幅的组合不尽合理;转身技术最为薄弱,表现在转身前减速,转身蹬前有停顿,与国外优秀运动员转身技术上存在一定差距;冲剌到边技术尚可,但仍有待精雕细刻。建议我国蝶泳运动员应重视基本技术和全面身体素质训练,根据个人技术、素质特点调整划频、划幅的组合;必须解决好转身技术环节。展开更多
Increasing global interest in methanoi fuel has led us to investigate the exhaust emissionsof its engine. Analysis of its inorganic and organic emissions. such as CO. NO_x and hydrocarbons(total HC) have been widely r...Increasing global interest in methanoi fuel has led us to investigate the exhaust emissionsof its engine. Analysis of its inorganic and organic emissions. such as CO. NO_x and hydrocarbons(total HC) have been widely reported. This paper presents an analysis of more than 20 kinds ofhydrocarbons in the emissions obtained from a spark-ignition Shanghai car running 85# gasoline anda comparison with emission from a Santana test car running M-100 methanol fuel. A set ofenrichment method has also been described. Test results show that at the current stage of methanolengine development the concentration of individual hydrocarbon including some poisonous substancesis lower than those of normal gasoline engine.展开更多
文摘本文对我国8 运会前3 名优秀男子蝶泳运动员和第26 届奥运会蝶泳比赛前6 名运动员的出发反应时、出发15 m ,途中游的划频与划幅,转身前后,7.5 m 技术以及冲刺到边进行了对比分析。结果表明,中国蝶泳运动员出发技术较好,划频能力不如国外优秀运动员,划幅较大,但划频与划幅的组合不尽合理;转身技术最为薄弱,表现在转身前减速,转身蹬前有停顿,与国外优秀运动员转身技术上存在一定差距;冲剌到边技术尚可,但仍有待精雕细刻。建议我国蝶泳运动员应重视基本技术和全面身体素质训练,根据个人技术、素质特点调整划频、划幅的组合;必须解决好转身技术环节。
文摘Increasing global interest in methanoi fuel has led us to investigate the exhaust emissionsof its engine. Analysis of its inorganic and organic emissions. such as CO. NO_x and hydrocarbons(total HC) have been widely reported. This paper presents an analysis of more than 20 kinds ofhydrocarbons in the emissions obtained from a spark-ignition Shanghai car running 85# gasoline anda comparison with emission from a Santana test car running M-100 methanol fuel. A set ofenrichment method has also been described. Test results show that at the current stage of methanolengine development the concentration of individual hydrocarbon including some poisonous substancesis lower than those of normal gasoline engine.
