Mdd
abbr. microgram per square decimeter per day 微克/分米/天（腐蚀速率单位）
🗣️ 情景例句
Of course.
那当然。
I don't seem to have any luck today.
我今天运气不好。
Look! What does that boat look like?
瞧！那艘船看起来像什么呀？