a cryogenic storage system低温冷藏系统Trapping gas pump include: adsorption, such as pumps and cryogenic pumps.气体捕集泵包括: 吸附泵和低温泵等.Foamed plastic materials containing many small cells which are not connected are good cryogenic i...
From these ports the grain is freighted down to Addis Ababa.粮食从这些港口运到亚的斯亚贝巴。There's more than a grain of truth in that.其中含有很深刻的道理。Any shortage could push up grain prices.任何一种短缺都会抬高粮食价格。...