Sugar content meter : hand-held glucose meter , hand-held refractometer .

糖量计：手持糖量计、手持折射仪。

Determination index of refraction of liquid by abbe refractometer .

用阿贝折射仪测定液体的折射率。

Abstract : the composing and controling principles of microcontroller control system of computerized subjective refractometer are introduced .

文摘：介绍了电脑验光仪单片机控制系统的组成原理和控制原理。

Check oxygen concentration by a refractometer .

用折射仪测量一下氧气的浓度。

Sugar content meter : hand-held glucose meter , hand-held refractometer ; 56 .

糖量计：手持糖量计、手持折射仪；55.