单词	半凸贝
释义	半凸贝Hemiptychina
随便看	retarder cement retarder flap retarder parachute retarder; retarding agent retarders retardierwerk retardin retarding retarding action retarding agent retarding agent--retarder retarding and levelling agent retarding basin retarding braking retarding chute retarding conveyor retarding disc retarding effect retarding electrode retarding--electrode retarding field retarding--field retarding-field oscillator retarding-field (positive-grid) oscillator retarding-field [positive-grid] oscillator