The dance sport was led into our country formally in 1986, it has more extensive massfoundation and becomes a more stable mode of contest gradually after 18 years 'popularization.
Volleyball is the only one of the three big balls that has won the world champion in China, which once had substantial massfoundation and abundant reserve forces.
排球在我国曾拥有广泛的群众基础和雄厚的后备力量，是我国三大球项目中唯一一个夺得世界冠军的项目。
3
The influence of the foundationmass on them is referred to as the inertial interaction.