例句與造句

1. The results of laser selective excitation indicate that the emission centers near the surface exhibit inhomogenously br oadened spectra while the two different symmetry sites inside the nanotube - walls present legible spectral structures . silicon nanowires were prepared by a thermal evaporation method
   受表面缺陷的影響，納米管壁近表面的eu ~ ( 3 + )離子處于較為復雜的微環(huán)境中，其發(fā)射光譜表現為非均勻展寬的光譜線形。
2. It's difficult to find selective excitation in a sentence. 用selective excitation造句挺難的