actinometer
actinometer
[ˌaktɪˈnɒmɪtə]
noun
[ˌaktɪˈnɒmɪtə]
noun
- (Physics)an instrument for measuring the intensity of radiation, typically ultraviolet radiation
(物理)曝光计（表），（尤指紫外辐射）光线强度计
- mid 19th cent.: from Greek aktis, aktin- 'ray' + -meter
考试词汇表
