在早型的以发光天体为主体的盘状星系中，根据光度分布规律可以得到面密度分布。
The mass distribution of surface density can be derived from the laws of surface luminosity distribution for earlier-type discoid galaxies, of which the main contents are bright.
电加热型熨平机，选用封闭式盘状电极，工作安全可靠，方便维护保养。
Electricity heating ironing machines is adopted enclosed discoid-shaped pole, which is worked safely and pole-replaced conveniently.
结果2 6例盘状半月板中，2 5例为外侧盘状半月板，只有1例为内侧盘状半月板，18例为厚板型，8例为楔型。
Results Of 26 discoid menisci, 25 were in lateral and only one was in medial. Besides, 18 were classified as slab type and 8 wedge type.
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