例句與造句

1. This hand refractometer rhl - 300 is used for measuring the refractive index of vegetable oil , petroleum , oil slicks , etc
   潤滑油折射計rhl - 300手持折射儀適用于測量石油潤滑油食品油等的折射率。
2. It's difficult to find hand refractometer in a sentence. 用hand refractometer造句挺難的