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FedEx Global Home - Choose Your Location
Welcome to FedEx.com - Select your location to find services for shipping your package, package tracking, shipping rates, and tools to support shippers and small businesses
www.fedex.com - 2019-07-31 详细 -
Science | AAAS
www.sciencemag.org - 2019-09-26 详细 -
Nuclear Suppliers Group - Home
www.nuclearsuppliersgroup.org - 2019-10-23 详细 -
ASM Journals
www.journals.asm.org - 2019-10-24 详细 -
The Royal Society of Chemistry
Advancing excellence, connecting chemical scientists and shaping the future of the chemical sciences for the benefit of humanity.
www.rsc.org - 2019-10-24 详细 -
The National Academies Press
The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).
www.nap.edu - 2019-10-26 详细