Noun:

1. a photometer for comparing two light radiations wavelength by wavelength

specabbr.细则；规格(=specification)abbr.投机（=speculation)abbr.特别；特别地（=special/specially)specifen萘啶酸(抗菌药)

1. The growth curve of Alternaria was measured by a spectrophotometer.
   用可见分光光度计测得交链霉菌的生长曲线。
2. The results indicate that this type of spectrophotometer can be applied into practice.
   结果表明，此分光光度计可以用于高精度的薄膜特性测量。