male force

The Research about Distribution Characteristics of Vola Force on the Ground in Male's Back Layout When High-jumpers Take-off mechanical seal with low back pressure

男子背越式跳高运动员起跳时足底压力分布特征的研究背面低压式机械密封

Methods: The pressure of cheek and tongue on mandibular and maxillar first molars was measured with a computer aided perioral force measuring system in 16 patients ( 8 male and 8 famale) with constrictive maxillary arch.

方法：用新型计算机辅助口周力测量系统对16名上颌牙弓狭窄患者上下颌第一磨牙颊侧、舌侧进行口周力测量。

Aiming at the injection mold structures of female mold on stationary mold, the force on the famale mold and male mold are analysed, and the cavity wall thickness are calculated.

针对凹模安装在定模上、凸模安装在动模上的注塑模结构，对矩形型腔模具进行了受力分析和型腔壁厚计算。

Through making biomechanical analysis on relative technique of long jumper's takeoff phase in 9th National Games, this paper thinks that lack of takeoff force still restrict our male jumper's performance.

通过对九运会男子跳远运动员起跳阶段相关起跳技术的运动生物力学分析，认为起跳力量不足仍是制约我国男子跳远成绩的关键。

CONCLUSION: Main reasons why senior male students are not interested in contents and methods of physical exercise materials in force are: ① Dull teaching contents and methods, large proportion of competition in materials, less teaching contents can stimulate students' interest in physical exercise.

结论：高中男生对现行体育教材内容与方法兴趣程度不高的主要原因是：①教学内容和教学方法机械呆板、竞技教材比重大、激发学生对体育兴趣的教材内容少。