precisionist对语言讲究精确的人precisionn.精确；精密度adj.精确的precision measure精确度量preferential 优惠办法precision counter精密计数器precision profile精密图像, 精密剖面图precision dancing单行舞蹈precision of root根的精度precision farming精准农业Precision feeding精细养殖precision cutting精密切削precision ratchet精密棘轮precision graphic精密图形