double protractor
相关英语词汇推荐
- diffuse reflectance light
- tracking laser radar
- pseudocontinuum
- checking
- beamsplitting blocks
- collisionless multiple-photon laser excitation
- self-sagging
- spatially bound function
- optical second harmonic generation
- laser
- astro-compass
- spherical aberration
- plastic-base mirror
- Acoustooptic Bragg diffraction
- Infrared spectroscopy
- metal lens
- aberration blur circle
- time-resolved interference spectroscopy
- Sonnar lens
- transit-time lidar velocimeter