折率的英文

discount rate

• 折:    roll over; turn ov ...
• 率:    rate; ratio; propo ...
• 年折率:    yearly depreciatio ...

例句与用法

1. The courses of the enhancement do n ' t damage iceland spar or change its physical properties , such as birefringence index , optic chatacter . these show that the samples measure up to their industrial standards after the heating . the experiment is successful
   褪色后的冰洲石晶体外观完好，其双折率、偏光性等物理性质没有明显变化，完全符合它在工业上应用的要求，冰洲石的颜色改善取得了明显的效果。