您要查找的是不是：
- electron scanning beam 扫描电子束
- In case of electronic scanning the beam width is broader by a factor of two . 电子扫描时，波束宽度展宽一倍。
- 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
- Plate scanning: The electronic scanning of a pres-ready plate to generate a record of the image areas in relation to its location across the press. 印版扫描:把准备印刷的印版用电子扫描，记录印纹面积和它的相关位置，贮存于磁带或磁碟上。
- The electronic scanning replaces optical machine scanning in infrared focus plane image thermometry based on infrared CCD. 基于红外CCD的红外焦平面热像仪以电子扫描代替光机扫描。
- 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
- The identity cards are examined by an electronic scanner. 用电子扫描器来检验身分证。
- Scanning Beam Instrument Landing System 扫描波束仪表着陆系统
- Survivability improvements include a BAES Digital Electronic Warfare System (DEWS) working in concert with the Raytheon Advanced Electronic Scanning Array (AESA) radar. 生存的改进包括一个BAES数字电子战系统（预警系统）的工作，与雷神公司先进的电子扫描阵列（ AESA ）雷达。
- Scanning Beam Landing Guidance System 扫描射束着陆制导系统
- With electronic scanning, the radar beams are positioned almost instantaneously and completely without the inertia, time lags, and vibration of mechanical systems. 电子扫描的雷达波束指向几乎是瞬间的，而且完全没有惯性、时滞和机械系统的振动。
- camera tube with high velocity scanning beam 高速电子扫描摄像管
- The system of Electronic Scan Multibeam Constant Difference Amplitude Comparison(ESCDAC)direction measurement is widely applied in modern radar interception receivers. 电扫描多波束恒差比幅测向体制在现代雷达截获接收机中有着广泛应用。
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- 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。
