自然的发展

The short blooming period hinders the development of the floricultural industry of moutan peonies.

自然花期较短严重影响了牡丹产业的发。

This paper is aimed at presenting the authors' study and analysis on the economic system for a virtuous circulation mode with teletube glass scraps in China by using the method of system analysis.

近年来,我国CRT显像管造行业迅速发,造显像管所需的大量优质石和化工原料的开采和合却破坏了自然生态环境,还造环境污染。