overburden ratio of mine的意思|示意
美 / ˌəuvəˈbə:dn ˈreiʃiəu ɔv main /
英 / ˌovɚˈbɚdn ˈreʃo ʌv maɪn /
（黑色冶金）矿山采剥比
overburden ratio of mine相关例句
The 'b' had been wrongly written as a 'd'.
b错写成d了。
《牛津词典》
Milk, oily fish and eggs all contain vitamin D.
牛奶、油性鱼类和鸡蛋全都含维他命D。
《柯林斯英汉双解大词典》