trapezium
n. (英)[数]梯形(等于 trapezoid);(美)[数]不规则四边形;大多角骨
n.[数]不等边四边形,梯形
blastoid directress drumlin himyaritic pyruvate下载迅蛙App
lolian2#163.com
n. (英)[数]梯形(等于 trapezoid);(美)[数]不规则四边形;大多角骨
n.[数]不等边四边形,梯形
blastoid directress drumlin himyaritic pyruvate