obscuration ratio造句
造句与例句
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- Where \ epsilon is the annular aperture obscuration ratio, or the ratio of the diameter of the obscuring disk and the diameter of the aperture ( beam ) . \ left ( 0 \ le \ epsilon, and x is defined as above : x = ka \ sin ( \ theta ) \ approx \ frac { \ pi R } { \ lambda N } where R is the radial distance in the focal plane from the optical axis, \ lambda is the wavelength and N is the f-number of the system.
- It's difficult to see obscuration ratio in a sentence. 用obscuration ratio造句挺难的
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