semicircular spectrometer
... 半整数自旋：half integral spin 半圆形光谱仪：semicircular spectrometer 半影装置：Device,half-shade. ...
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semicircular spectroscope
... semicircular spectrometer 半圆形光谱仪 semicircular spectroscope 半圆形光谱仪 semiconducting glass 半导电玻璃 ...
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