focus n. (pl. focuses, foci ) 1.【物理学】焦点。 2.【物理学】焦距;聚焦,对焦点,配光,对光。 3.(活动兴趣等的)中心。 4.【医学】病灶。 5.(地震的)震源。 the focus of the world's attention 世界注意的中心。 principal focus 【物理学】主焦点。 real [true] focus 【物理学】实焦点。 virtual focus 【物理学】虚焦点。 the focus of a disease 病的主要患部。 the focus of an earthquake 震源。 bring into focus = bring to a focus 使集中在焦点上配光,对光。 in focus 焦点对准,清晰。 out of focus 焦点没有对准,模糊。 vt. (〔英国〕 -ss-) 1.使聚焦,对焦。 2.调节镜头、焦距等。 3.集中注意力于。 4.使限制于小区域。 vi. 聚焦,注视,调焦距;限制于小区域。 focusing cloth 【摄影】遮光黑布。
dynamic adj. 1.动力的,动力学的;力学(上)的;动(态)的;起动的。 2.有力的,有生气的;能动的;(工作)效率高的。 3.【音乐】力度;强弱法的。 4.【医学】机能(上)的。 5.【哲学】动力论的,力本论的。 a dynamic personality 活跃的性格。 a dynamic atmosphere 生气勃勃的景象。 a dynamic population 动态人口。 n. 〔限指 dynamic〕 (原)动力;动态。 adv. -ally
Design of dynamic focusing circuit for testing system of projection cathode ray tube with double beams 双束投影管测试台中动态聚焦电路的研制
Phased array ultrasonic testing can accomplish dynamic focusing , obtain visual image , inspect component of complex geometry . also it can improve detection sensitivity , resolution and snr , so it has recently been highly recognized in ndt research domain 它具有能进行动态聚焦、可进行成像检测、可检测复杂形状物体、能提高检测灵敏度、分辨力和信噪比的多项优点,近年来正成为国际无损检测界的研究热点。
In this paper , at first , we analyzed the feasibility of dynamic focusing by interpolation method , and then introduced our particular design of digital - coding emission , dynamic filter , dynamic focusing and digital i / q demodulation in digital front - end based on fpga 论文首先在理论上分析了内插式数字动态聚焦实现的可行性,然后对数字前端的关键技术:数字编码发射、动态滤波、动态接收聚焦、变迹变孔径、正交包络检波等的fpga实现进行了详细的阐述并给出了实现方案。
It is equipped with 120w radio frequency laser producer and cti dynamic focusing , so there is smaller light point , and larger tange of marking . besides , its forceful laser power and unparalleled processing speed makes a accurate and vivid effect possible . it costs low and need no materials . the degree of the clearness and depth of marking can be controlled freely 该机选配美国进口120w射频激光器cti动态聚焦,光点尺寸更小打标范围更大,加上强悍有力的激光功率,无与伦比的加工速度,实现了精确逼真的加工效果,加要成本低廉,无需耗材,标记清晰深浅度随意控制,适用于多种你想加工的非金属产品。