Snellen

基本解釋

The mean follow up time is 37.7 months, with an average improvement of three lines of Snellen acuity.
裝配隱形眼鏡后平均追蹤的時間為37.;7個月，病眼可獲得平均三行視力的改善。
The application of Chilo infuscatellus Snellen sex attractant pheromone- Z11--16:OH in cane field,has an efficiency over 80%.
甘蔗二點螟性外激素順11-16碳烯醇用于大田防治效果達80%25以上。
Having a maximal visual acuity of the better eye,after correction by refractive lenses,of one-tenth normal vision or less(20/200 or less on the Snellen test).
瞎的，失明的通過折射矯正后，最好眼最大視力敏感度為正常視力的1/10或少于1/10的（斯奈倫測試20/200）或更低。
Having a maximal visual acuity of the better eye, after correction by refractive lenses, of one - tenth normal vision or less(20 / 200or less on the Snellen test.
瞎的，失明的通過折射矯正后，最好眼最大視力敏感度為正常視力的1/10或少于1/10的（斯奈倫測試20/200）或更低
Having a maximal visual acuity of the better eye, after correction by refractive lenses, of one-tenth normal vision or less(20/200 or less on the Snellen test).
瞎的，失明的通過折射矯正后，最好眼最大視力敏感度為正常視力的1/10或少于1/10的（斯奈倫測試20/200）或更低