纺机绿丙烯酸醇酸磁漆
spinning machine green acrylic-alkyd enamel
铝粉醇酸磁漆
aluminium powder alkyd enamel
电磁铁磁路结构
magnetic circuit structure of solenoid
黑磁化铁醇酸车辆面漆
black alkyd finish containing magnetic iron oxide for rolling-stock
环形磁铁磁场
Magnetic field of circular magnet