3. development of screen coating solution
based on luminosity
- 0.8gain : forget for many trainees use a high efficient
projector extra-large screen applied
- 1.0gain : target for many trainees, use a high efficient
projector large screen applied
- 2.0gain : target for sole trainee, use a normal performance
projector large screen applied
- 2.5gain : target for sole trainee, use a normal performance
projector extra-large screen applied
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