单词drawtube
n.: 活镜筒；显微镜抽筒
网络: 伸缩管；目镜套筒
显微镜抽筒
活镜筒
复数：drawtubes
Approach to Improve Response Speed of Drawtube-Scan-Velocity Control System for TDI Side-Glance Aeronautical Camera
提高TDI摆扫航空相机镜筒扫描控制系统响应速度的方法
Design and Lightweight Research of Cassegrain Drawtube in Space Remote Instrument
空间遥感仪器卡塞格伦镜筒的设计及轻量化研究
Realtime Measurement of Bend of Periscope Drawtube by Linear Array CCD
用线阵CCD实现潜望镜镜筒弯曲的实时测量