词汇	青年营
释义	青年营 youth camp
随便看	rotation radio beacon rotation radiography rotation radiotherapy rotation radius Rotation-speed rotation speed control rotation speed feedback control rotation speed fluctuation rotation speed for cast rotation speed identification rotation speed measurement rotation speed of hard disk rotation rate rotation recorder rotation recurrence rotation-reflection axis rotation reflection group rotation regime rotation regulation rotation, regulatory rotation age rotation relaxation rotation-resistant wire rope rotation reversal test rotation reversal test for main engine rotationrevolutionhead movement