upper and lower meaning in English
上和下
上及下
Examples
- Two sealing blocks are needed for both upper and lower surfaces .
上下翼面各需要用两个密封嗔块。 - Confidence limits are the upper and lower limits of the confidence interval .
置信限是指置信区间的界限。 - Both the upper and lower sandstone units of the precipice are oil-bearing .
普雷西皮斯的上部和下部砂岩单元都含油。 - The upper and lower jaws possess straight tooth rows and the jaw arches are almost rectangular in shape .
上、下颌具有直的齿列，而颌弓几乎呈直角形。 - This variation in speed results in different distances being traversed during the upper and lower halves of the cycle .
速度的这种变化使得上半周和下半周所通过的距离不同。