Throughout the world, Guihai (桂海 
, 贵海 , Guihai 
) is a common primarily masculine, but very infrequently girly first name. The first name Guihai is characteristic of Eastern Asia, particularly China, where it is a rare predominantly male, but very infrequently feminine name. Very seldom, Guihai is the last name as well as the forename.
| guihai zhang researcher (ORCID 0000-0002-4661-8864) |
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| guihai feng researcher |
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| guihai zhao Ph.D. Boston University 2016 |
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| guihai yu researcher |
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| guihai chen |
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