hundred pascal造句

The whole ring is filled with a HeNe mixture of suitable partial pressures ( up to a few hundred Pascal ), to achieve lasing and good suppression of multiple pairs of modes . ( Typically, the HeNe lasing gas at 633 nm is used; attempts for an argon ring laser failed . ) Further, the lasing is excited with radio frequency to easily adjust the amplitude to just below the appearance of the second pair of modes.
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