refractive怎么读，refractive什么意思，refractive短语和例句

1.Most insurance companies do not cover the cost of refractive surgery.

但大多数保险公司却并不支付屈光手术的费用。

2.A waveguide is characterized by a region of high refractive index bounded by regions of lower index.

波导就是折射率高的区域由折射率低的区域包裹的结构。

3.The refractive index of the PDLC is measured and it is coincident with the results by other methods.

用此方法测量了某聚合物分散液晶的折射率，与用其他方法得到的结果相符。

4.That's probably because aragonite has two refractive indices, the extent to which a particular material focuses incoming light.

这可能是由于碳酸钙晶体具有两种折射率——折射率会限定某种物质聚焦入射光线的范围。

5.The most common types of refractive errors are myopia, hyperopia, presbyopia, and astigmatism.

最常见的屈光不正有：近视、远视、老花眼和散光。

6.Finally the effect of refractive index gradient on the wave surface quality of laser beam is discussed.

讨论了折射率梯度对传输激光波面质量的影响和波面补偿的可能性。

7.The elective use of aspirin and nonsteroidal anti-inflammatory drugs is discouraged for refractive cases.

对于屈光不正的病例，我们不建议选择性使用阿司匹林及非甾体类消炎药。