英语词汇“dead letter box, dead letter drop”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	dead letter box, dead letter drop
释义	dead letter box, dead letter drop 密件投递处；秘密信件约定存取点；机密文件等的秘密交接地点；“死信箱”
随便看	calibration of synthetic job calibration of system calibration of system models calibration of tank calibration of tanks calibration of test gauge calibration of testing instrument calibration of testing machine Calibration of the Hall magnetometer Calibration of theodolite geometry relation calibration of thermocouple calibration of thermometer Calibration of urethra Calibration of view angle calibration of viscometer calibration of viscometre calibration of wavelength scale calibration of weight calibration of weights calibration of workload model calibration of x ray unit calibration of x-ray unit calibration on ground calibration online calibration on non-uniformity