That was a guy called Vince Fedele of VST who still make Precision Baskets, who also make refractometers.

那是一个叫 Vince Fedele 的人，他仍然制造精密萃取机，也制造折光仪。

Vision track 2 is actually our third generation refractometer, that helps you measure your corrective power, so you can use the results to order glasses online.

视力检查二代是我们的第三代验光仪，它可以帮助您测量您的矫正能力，因此您可以使用结果在线订购眼镜。

If you dive into extraction theory and you start playing the refractometers, you'll notice that the software does ask you to specify if it's an immersion or a percolation, because it does affect your extraction calculations.

如果你深入研究提取理论，并开始使用折射计，你会注意到软件确实会要求你说明是浸没还是渗透，因为它确实会影响提取计算。