precisionist对语言讲究精确的人precisionn.精确；精密度adj.精确的precision product精密产品precision of parts成型精度precision spraying精确喷雾precision blanking精密冲裁precision cleaning精细清洗precision drilling精密钻孔precision stacking精密叠边precision adaptive精度自适应precision resistor精密电阻器precision op-amp精密放大器