单词	双勾
释义	同白描--线描--双勾
随便看	isopentanol， isoamyl alcohol， isopentyl alcohol isopentene isopentyl isopentyl alcohol isopentylidene isopentylidyne isopentyl n-butyrate isopentyl o-hydroxybenzoate isopentyloxy isopentyl pyrophosphate isopentyl salicylate isopercental line isoperibolic calorimeter isoperibol-type calorimeter isoperimeter isoperimetic isoperimetrical isoperimetric constant isoperimetric curve isoperimetric figure isoperimetric figure s isoperimetric figures isoperimetric inequality isoperimetric polygon isoperimetric problem