To make the Kaplan turbine technology comparable to both the Pelton and the Francis turbine,the master equation for the ......

笔者分析了我国男子跳远运动员后10m助跑的现状,指出了所存在的问题:助跑速度相对较慢;助跑与起跳结合不连贯;倒二步过大,使腾空时......