2) A ball over three circles
三环顶球
1.
"A ball over three circles", a device for demonstrating persistence of vision andcolour blending, is introduced in this paper,and is presented the making and operation of the de-vice.
本文介绍一种演示视觉暂留现象和颜色合成的实验装置——三环顶球,简述该装置的制作过程和操作方法。
3) top-three leaves
顶三叶
1.
Change characteristics of the top-three leaves structure in wheat development process;
小麦植株发育过程中顶三叶结构的变化特征
4) Dingxiangsanxue
顶项三穴
5) trihedral vertex
三面顶点
6) triangle top mark
三角顶标
补充资料：挨三顶五
1.犹言三五成群。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条