quadrangular number数: frequently; repeatedly四角: boxer shorts; four corners; quadrilateral; shikaku; sikak; smpte; square head bolts; tetra多角数: polygonal number角数据: angular data三角数: triangular number下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:四角数，即可在微信中查询翻译
