roasting in air的意思|示意

Based on the properties, a combined flowsheet of flotation-roasting in air -cyanidation-active carbon absorption was developed. The overall recovery of Au is of 83. 91%.

依据矿物学特性，提出了“原矿浮选— 精矿氧化焙烧— 氰化浸金— 活性炭吸附金”的选冶联合工艺流程，金选冶总回收率达83．91％。

Sometimes the skin is rubbed with malt sugar to give it an amber colour and is then hung up to air dry before roasting in the oven.

有时厨师会给鸭皮抹上饴糖使它变成琥珀色，在放入烤炉烘烤之前还需要把鸭子挂在空气中干燥。