| 单词 |
lomonosov reflector |
| 释义 |
Lomonosov Reflector Lomonosov Reflector a single-mirror telescope proposed by M. V. Lomonosov in 1762. In the Lomonosov reflector the optical axis of the primary concave parabolic mirror is inclined toward an incoming pencil of rays such that the rays are collected at the focus outside the pencil. This makes it possible to eliminate fully the screening of a pencil incident on the mirror by a secondary mirror. The Lomonosov reflector is not free of aberrations. |
| 随便看 |
- landing system
- landing systems research aircraft
- landing systems test facility
- landing-takeoff cycle
- landing team
- landing tee
- landing tender
- landing threshold
- landing threshold point
- landing traffic
- landing trail intermediate school
- landing transport, dock
- landing tread
- landing up
- landing up in
- landing upon
- landing vehicle airfoil
- landing vehicle assault
- landing vehicle hydrofoil, experimental
- landing vehicle tracked
- landing vehicle, tracked, command
- landing vehicle tracked, command, experimental
- landing vehicle, tracked, engineer, model 1
- landing vehicle, tracked, howitzer
- landing vehicle tracked, personnel
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