1.  photometer
2.  light meter

• 1. 测光仪: Test light | photometer | Light Meter
• 2. 反射测光仪: reflectance meter
• 3. 激光测距仪: laser rangefinder | laser distance meter | laser distance measuring instrument | laser ranger | laser range finder

更多释义

• 1.介绍了应用日本岛津pda - 5017型光电直读光谱仪，采用脉冲分布测光法(PDA法)，测定了中低合金钢的碳和硫。
  Carbon and sulfur in low and middle alloy steel were determined with SHIMADZU PDA - 5017 direct reading spectrometer by using the PDA (Pulse height Distribution Analysis) method.
  dict.yoduao.com
• 2.对于一般的野外工作建议用毛细管采集后使用便携式旋光测糖仪测其糖含量。
  For studies in the field, the techniques of using capillary tubes to collect nectar and hand-held refractometer to measure sugar content are recommended.
  dict.yoduao.com
• 3.传统激光干涉测角方法，大多采用迈克尔逊干涉仪光路或其变形，将角度测量转变为光程测量。
  Most of traditional methods of angular measurement based on a Michelson Interferometer or its modifications have the same principle: the rotation is transformed into an optical path difference (OPD).
  dict.yoduao.com

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