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巴拿马海道关闭
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巴拿马海道关闭
Encyclopedia
理学
新生代海陆格局
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closure of Panama Seaway
巴拿马海道关闭
中中新世至晚上新世时期,由于板块构造活动,南美洲与北美洲大陆之间的海水通道关闭,造成大西洋和太平洋的海水交换停止、海道两侧的海洋生物群之间的交流被阻断的事件。
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National Students Nutrition Day
national style
national style of the film
National Superconducting Cyclotron Laboratory at Michigan State University
national supervisory commission
National surveying and Mapping Archive
National Symposium on Ancient Chinese
National Symposium on Children's Literature Theory
National Symposium on Computerized Information Management
National Symposium on Middle Chinese
National Symposium on Modern Chinese
National Symposium on Publication of Children's Books
National Symposium on Science and Technology Information Work
National Synarchist Union
National Syposium for the Creation of Modern Drama, Opera and Children's Drama
national system of emergency response platform
National Taiwan University of Arts
national teaching skills contest for the public security colleges and universities
national team
National Tea Variety Evaluation Committee
national tea variety regional experiment
National Technical Committee 170 on Printing of Standardization Administration of China
National Technical Committee 561 on Police Equipment of Standardization Administration of China
National Technical Committee for Library Standardization
National Technical Committee for Standardization of Cultural Relics Protection
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