Partial thyroidectomy for toxic goiter was practiced widely.用甲状腺部分切除治疗急性甲状腺肿一直被广泛采用.Unfortunately, geophagy is also practiced to avoid hunger pains when other food is scarce.遗憾的是, 一旦其他食物缺乏,人们也吃土以避免挨饿之苦.He practiced the i...
A new high activity , lowcost catalyst and the optimal reaction conditions were found by experiments.通过实验找到了一种新型、高效 、 廉价的催化剂,以及最佳反应条件.The project involves harvesting rainwater using special lowcost containers and digging...