established area meaning in English
发展完备的地区
发展完备地区
Examples
- Infinite - dimensional linear systems is now an established area of research with a long list of journal articles , conference proceedings , and several textbooks to its credit
， 99 ( 2000 ) ， 245 - 249 。这里，我们把yao等人的结果推广到局部竞赛图中，并得到一个非常有意义的定理。 - " the majority of the proposed country park is hilly areas and upland valleys covered with natural woodland and unspoiled streams . also of high conservation value are the well - established areas of secondary woodlands , developed montane forests and fresh water habitats
建议中的扩建范围大部分都是高山及高地幽谷，有不少天然林木和未受污染的溪流。山区中茂密的次生林地、高地树林及淡水生境均具有高度的自然护理价值。