frontonn.回力球场；回力球的墨西哥名字frontn.正面；前面；前线；【气象学】锋vt.朝向；面对；对付vi.面朝；掩护adj.前面的frontosphenoidal suture额蝶缝front - end filtering前端滤波front and behind method前后法frontoanterior position额前位front extraction method前路出粉法front collision warning前方碰撞报警front longitudinal rail前纵梁front end microcomputer前端微计算机front pump driving gear前泵主动齿轮front platform computer前台机