ceiling projector การใช้

• A : Hammacher Schlemmer stocks ceiling projector clocks ( $ 59.95 ) that run on batteries.
• At night when it is not practical to use a balloon the ceiling projector is used.
• A : Hammacher Schlemmer stocks ceiling projector clocks ( $ 59 . 95 ) that run on batteries.
• Audio descriptions of war strategies and troop movements are illustrated by animated maps, beamed from ceiling projectors onto white oval floor screens.
• In addition, a  master terminal and a ceiling projector provide presenters with the option of adding and presenting their own content.
• However, during twilight it may be impossible to use the ceiling projector and then a pibal ( pilot balloon ) light may be used.
• The "'ceiling projector "'or cloud searchlight is used to measure the height of the base of clouds ( called the ceiling ) above the ground.
• I think I'll stick with the ceiling projector for now . :-) Clear skies to all of you talk ) 20 : 08, 23 March 2010 ( UTC)
• In many articles ( including Trans National Place, Dan Osman, Laurel Creek Gorge Bridge, Newburgh-Beacon Bridge, Ceiling projector, Panama Canal expansion project and Altitudinal zonation ) this precise conversion is used.
• :: : : : Oh, " that's " how it's done-- you shine a ceiling projector at the cloud base and measure the bright spot's angle of elevation with an alidade or theodolite, and then take the tangent of that angle to get the cloud base height.