figure eight

同根派生

Another says that it is a variant of a figure eight that appeared on the Spanish Peso, standing for the pieces of eight.
还有一种说法是，它是数字“8”的变体，“8”曾经出现在西班牙比索上，代表“八片币”。
One simple use for this is to display the Sun's "analemma" - the "figure eight" shape traced out by the Sun at noon over the course of a year.
一个例子是显示太阳的“日行迹”-你一年每天在同一时间记录太阳在天空的位置,就得到太阳的8字型轨迹。
This knot, from the figure eight family, is used mainly as a stop knot to prevent a free end of rope from running through a pulley or a block.
图片左方文字：绳头右方文字：绳身此结用途广泛，用于把安全索或人固定到绳子、船锚绳、救援设施和其他设备上。
If we graph ??in spherical polar coordinates we get surfaces with the familiar figure eight cross section; again, these are graphs and not orbital shapes.
如果我们在球极坐标中作?猛枷撸0得到熟知的8字形截面；再说一遍，这是图线而不是轨道形状。
If we graph ??in spherical polar coordinates we get surfaces with the familiar figure eight cross section ; again, these are graphs and not orbital shapes.
如果我们在球极坐标中作?猛枷撸0得到熟知的8字形截面；再说一遍，这是图线而不是轨道形状。