而氟化锶、氯化锶、氟化镧、氯化镧和氯化钠与对照组相比无明显差异(P>0.05)。
No significant differences were observed between SrF 2 , SrCl 2 , LaCl 2 , LaF 2 , NaCl and the control groups ( P > 0.05 ) .
掺铬氟化锂锶铝激光器小信号增益的研究
Study of the small signal gain for a Cr : LiSAF laser