泥质沉积物沉积后, 体积的70-80%是水.When deposited , 70 - 80 % of the volume of muddy sediments may be water.河床沉积物一般比邻近的泛滥平原沉积物粗些.Channels generally contain coarser sediment than do the adjacent flood plains.这些气体包括窜缸气体, 沉积物, 酸, 机油和其它杂...
Wear ligating modules, headgear and other accessories as instructed by your orthodontist.4严格按正畸医生的要求戴用橡皮圈和牵引头帽等辅助装置.To explore the feasibility of ligating and embedding a pump in the iliac artery by laparoscopic.目的:探讨直肠癌...
水有源, 木有本.A stream has its source, a tree has its root.木有本,水有源.Every tree has its roots and every river has its source.爱金钱是万恶之源.The love of money is the root of all evils....