单词	pen holder--pen rack
释义	pen rack; pen holder笔架
随便看	displacement condition displacement constraint displacement controller displacement current displacement curve displacement curve displacement leangth ratio displacement damage displacement--damage displacement deferred indexed displacement deferred indexed mode displacement deferred mode displacement desorption displacement detector displacement development displacement deviation displacement deviation scanning displacement deviation, scanning displacement diagram displacement-- doppler displacement effect displacement efficiency displacement electroacoustic receiver displacement energy displacement engine displacement equation