近年来，诸多国家在环境微生物领域先后开展了分子生物学研究方法的建立和生物学评价工作。
Recently, molecular biology methods are established and biology evaluation are carried out in environmental microbiology field in many countries.
在IMS方面，2006年，中国移动、中国电信、中国网通、中国联通等先后开展IMS系统的测试。
Inrespect of IMS, China Mobile, China Telecom, China Netcom and China Unicom conducted tests of the IMS system successively in 2006.
基于目前我国电信运营商先后开展积分活动的现状，针对固网运营商提出了一套积分营销方案设计理论。
Based on the actuality that Telecoms operators develop integral activities successively, this paper advances a set of theories for integral marketing design, which aims at the fixed-line operators.
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