单词	foam cervical collar
释义	foam cervical collar 固定用泡沫衬垫领圈
随便看	luminous directional reflectance luminous discharge luminous discharge tube luminous disease luminous display luminous display unit luminous display with reflector luminous dot luminous dust nebula luminous earthworm luminous edge luminouse energy transfer efficiency luminous effect luminous efficacy luminous efficacy of a source luminous efficacy of LED device luminous efficacy of radiant flux luminous efficacy of radiation luminous efficien luminous efficiency luminous efficiency at a specified wavelength luminous efficiency curve luminous efficiency function luminous efficiency of phosphor screen luminous efficiencyof radiation