The vegetarian Resource Group in Baltimore, Maryland did a study in two thousand six on the number of vegetarians in the United States.
马里兰州巴尔第么素食资源团体2006就美国的素食者数量做了一项研究。
On the foundation that limits to industrial group, the article uses capacity from study effectiveness and area resource on one hand the;
在对产业集群界定的基础上，本文一方面从学习效用和区域资源利用能力两方面论证了产业集群所获取的正面市场竞争力；
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