Frontin弗龙坦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frontomarginal sulcus额缘沟front axis suspension前轴悬挂Front Wheel Side Slip侧滑量front-wheel bearing前轮轴承front wheel alignment前轮对准,前轮定位front-door practice正门操纵front tracking method平均跟踪法frontolacrimal suture额泪缝front principal point前主点front silvered mirror前涂银镜