细长椭球体在水中自由下落的运动特性实验研究 1)
詹军,张杰,阳倦成,倪明玖

EXPERIMENTAL STUDY ON THE KINEMATICS OF FREELY FALLING PROLATE SPHERE IN THE WATER 1)
Zhan Jun,Zhang Jie,Yang Juancheng,Ni Mingjiu
图2 实验颗粒形状以及相应的坐标系
Fig.2 Particle shape in experiments and the corresponding coordinate system