teetertotter
- 网络跷跷板;玩跷跷板
teetertotter-
Two people balance on a teetertotter more commonly than just one ( in the middle of the board ), and sometimes two may swing together with one seated and the other standing and " pumping ";
两个人坐跷跷板比一个人玩更普遍（一个人坐在翘翘板中间），有时两个人一起玩时，一头坐，另一头站，“上下摆动”；
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The results indicate that : siphon effect mainly supplies the matter and energy transformations , connected vessels effect is to start vertical movement 、 excitated gravity wave probably and produce phenomena of teetertotter , while narrow pipe effect is to increase velocity .
结果表明，河西走廊连通器的虹吸效应主要是传输各种物质和能量，连通器效应是产生垂直运动、激发重力波和产生翘翘板现象，而狭管效应主要是增强风速。