21.   For now, nanotechnology is largely limited to university laboratories.

n. + laboratory >>共 211
research 16.39%
government 5.74%
weapon 5.26%
science 4.90%
police 4.43%
crime 3.95%
drug 3.71%
computer 3.23%
university 2.51%
methamphetamine 1.91%
university + n. >>共 600
student 13.74%
official 10.58%
professor 6.55%
campus 4.83%
president 3.85%
system 2.08%
degree 1.79%
graduate 1.66%
administrator 1.66%
spokesman 1.59%
laboratory 0.38%
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