关键是您要有publication等证明您的research achievements。
A common misconception is that an alien applicant must graduate, and then
work a full three years before they are able to apply as an EB1B immigrant.
Part of the time spent on Ph.D. research can often be counted towards the
three year working requirement, if there are research achievements during
this period which usually demonstrated by publications.
Usually, research experience after a master’s degree with documented
achievement is recognized as time counting against the three-year experience
requirement.
In some circumstances, experience in a second master’s degree program can
count as half of their educational experience toward their working
experience, if it is supplemented by achievements in a related research
field.