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中华人民共和国驻美国大使馆
www.china-embassy.org - 2019-09-30 详细 -
IAP - The InterAcademy Partnership
The InterAcademy Partnership (IAP), was formally launched in South Africa in March 2016, bringing together established networks of academies of science, medicine and engineering, n
www.interacademies.net - 2019-10-26 详细 -
Welcome to OWSD | OWSD
www.owsd.net - 2019-10-26 详细 -
RAA Homepage
www.raa-journal.org - 2019-10-26 详细 -
?vod | Scientific American
www.sciam.cz - 2019-10-28 详细 -
Panorama Software - Virtual Tour Softwar
Easypano Provides Panorama Software , Virtual Tour Software and VRTour Software. Creat High Quality Panoramas and Virtual Tours Efficienty.
www.easypano.com - 2019-12-10 详细 -
MANRS – Mutually Agreed Norms for Routi
Mutually Agreed Norms for Routing Security
www.manrs.org - 2019-12-15 详细 -
IEEE Meeting Conferences and Events
www.ieeemce.org - 2019-12-15 详细 -
Techstreet -Technical Information Supers
Engineering standards, specifications, technical books, and more technical resources for engineers, technicians, scientists and other technical people.
www.techstreet.com - 2019-12-15 详细