铑

This paper presents the developing process of the plasterboard , the design and production capacities of the plasterboard in recent yars and the production present situation in China.

介绍了我国纸面石膏板的发展过程，近年石膏板的设计生产能力与生产发展现状。

It is really wondrous that on dark black background, golden and blue spots are counterchanging sparkling with each other, lightening over shining, novel and mysterious, the item is supposed to be regarded as "curiosa from treasures" and "astonishing creation of crystallization made by nature".

在深黑底面上，&金钻&、&彩钻&交相辉映，栩栩生辉，新颖神秘，可视作&珍品中的珍品&，&大自然的神奇结晶&。