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- return scanning beam 逆程电子束,回扫电子束
- Sound Gate: The gate used in an optical sound head, instead of a sound drum, to keep the film sound track precisely aligned on the scanning beam slit during sound reproduction. 声门：光学声音头上用的片门，代替声鼓，使得胶片的声轨在声音重现过程中正好和扫描狭缝光束精确地排列成一直线。
- This study is useful to pentagonal prism manufacture process and adjustment,and helpful to correct wave-front error of scanning beam turning during wave-front measurement of large aperture telescope. 指出此研究结果有利于五角棱镜的加工和棱镜调整,还有利于大口径望远系统波前检测过程中扫描光束转向的波前误差的修正。
- Sound Drum: A flat roller in the sound head designed to keep the film precisely positioned at the point where the scanning beam slit scans the sound track. 音鼓：声头上的一平滚筒，设计用来让胶片精确放置，使得扫描夹缝光束正好扫描到胶片上的声轨上。
- Frequency Referenced Scanning Beam 频率基准扫描波束
- time reference scanning beam (TRSB) 时基扫描波束
- Microwave Scanning Beam Landing System 微波扫描波束着陆系统
- camera tube with low velocity scanning beam 低速电子扫描摄像管
- Scanning Beam Instrument Landing System 扫描波束仪表着陆系统
- Scanning Beam Landing Guidance System 扫描射束着陆制导系统
- camera tube with high velocity scanning beam 高速电子扫描摄像管
- I buy him a drink in return for his help. 我请他喝酒以酬谢他的帮助。
- We look forward to the return of spring. 我们期待着春天的到来。
- In projection coefficient computation,grid index and the length of the grid are calculated fast and exactly by coordinates which are intersected by the scanning beams and parallels. 在投影系数计算中,通过扫描线与平行于两坐标轴的平行线束交点坐标,快速精确计算出扫描线穿过每个像素格子的长度。
- He avowed that he would never return. 他声明他决不回来了。
- He makes a return and go back to the hotel. 他掉转车头，驶回饭店。
- He might think it polite to return the visit. 他可能认为回访比较合乎礼仪。
- Phase Array Radar can scan beams fast by controlling the phase of radiator elements in the antenna aperture surface, which shows many excellences such as agility, change celerity and multifunction. 相控阵雷达通过电的方式控制天线孔径面上各辐射单元的相位变化，以实现波束的快速扫描，使其具有灵活、变化快速、多功能等优点。
- He swore by his honour he would return the bike. 他以自己的名誉发誓一定归还自行车。
- The normal return fare to New York is fifty-six. 去纽约的来回票标准价是56元。
