| 释义 |
semi-diˈrect, a.
[semi- 1 a.]
Not wholly direct; spec. (of lighting) so disposed that most but not all of the light reaches the illuminated area without first being reflected.
1914S. C. Batstone Electr. Light Fitting viii. 166 If a frosted glass bowl or something of a similar nature be placed between the lamps and the surface or space to be illuminated, the result is ‘semi-direct lighting’. 1926J. S. Huxley Essays of Biologist i. 15 We can learn a great deal from the semi-direct methods of paleontology. 1957Encycl. Brit. XIV. 107/2 Semidirect [lighting equipment]..10–40 [% upward]... 60–90 [% downward]. 1971Powell & Higman Finite Simple Groups viii. 294 We form the semi-direct product GI. |