Refractometer
n. 折射计\\n[化] 折射计
🏥 医学释义
折射计，屈光计
🗣️ 情景例句
The only entry requirement is a valid passort.
入境的唯一条件就是持有一本有效的护照。
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
and shows no signs at present of ceasing to rise.
并且目前尚无停止上升的迹象，