- 1. 凹的
concave lens 凹透鏡
his cheeks were hollow, almost concave 他的雙頰沒有肉，幾乎是凹進去的
...toilet paper and the position is not the same21. different brands have different concave/convex removable suction power22. different branded toilet tissue flat layout of the concave...
...直徑及表面半徑而論、雙凸透鏡比平凸透鏡具有較短的焦長‧ 2.Like plano-concave lenses, double-concave lenses diverge collimated incident light...
麻煩達人幫忙翻譯成英文，感謝~ 請參考附件的相片，本次來貨發現部份的包裝鐵桶側邊都有凹陷，大部份的凹陷都在棧板上桶與桶的內側，很明顯的可以看出是在裝櫃前即有的損壞。 由於這並不是第一次發現的損壞，上次的來貨也有相同的情形，請您跟工廠反應，務必避免相同的情況再發生。?
...cargo beneath. Within this consignment,there were some drums with concave aside either mainly on its side, top or even inside; that had been...