常見例句雙語例句Methods measurements of contrast sensitivity at 6 spatial frequencies and visual acuity at 4 contrast levels were made in 39 asthenopes.方法采用對比敏感度函數(shù)中6種空間頻率和對比視力表中4種對比度的視標對有關(guān)人員進行測試。 返回 spatial contrast sensitivity