biconvex双凸: biconvex的: 4次方是 The fourth power of 2 i ...两面: two sides; both sides; two a ...凸: bulge; protrude两面凸的: bicenvex; biconvex; convexo convexe; convexoconvex; convexo-convexe; lenticular; lenticulated; lentiform下载手机词典可随时随地查词查翻译