grade A甲级graden.等级；年级；成绩；斜坡v.分级；评分；渐次变化graded certificate system分级证书制度grade separationalignment立交线形grade of sound insulation隔声等级grade parking performance坡道驻车性能grade of physical culture体育成绩grade of fine iron powder铁精粉品位grade of fuzzy membership模糊隶属度graded aggregate pavement级配路面graded thermoelectric arm分段热电臂graded insulating winding分级绝缘绕组