写后直接读directreadduringwritedrdw: 写中直接读directradiation scintillation counter: 直接照射闪烁计数器directreader spectrograph: 直读式光谱仪directr general of caac: 中国民航局局长directreader spectrometer: 直读式分光仪下载手机词典可随时随地查词查翻译