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.
還有一種說法是，它是數字“8”的變躰，“8”曾經出現在西班牙比索上，代表“八片幣”。
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.
一個例子是顯示太陽的“日行跡”-你一年每天在同一時間記錄太陽在天空的位置,就得到太陽的8字型軌跡。
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.
圖片左方文字：繩頭右方文字：繩身此結用途廣泛，用於把安全索或人固定到繩子、船錨繩、救援設施和其他設備上。
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.
如果我們在球極坐標中作?猛枷擼0得到熟知的8字形截麪；再說一遍，這是圖線而不是軌道形狀。
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.
如果我們在球極坐標中作?猛枷擼0得到熟知的8字形截麪；再說一遍，這是圖線而不是軌道形狀。