Mdd
abbr. microgram per square decimeter per day 微克/分米/天（腐蚀速率单位）
🗣️ 情景例句
Tomorrow.
明天。
I need the change for the stamp machine.
我需要投入自动售邮票机的零钱。
My speech was ill-form and not pleasant to hear.
我的言语变调走样，很不好听。