Contamination - proof is an absolute necessity in the maintenance of fluidic devices.防止污染对保养射流装置是绝对必要的.Then the difference between fluidic light discharge theory and Townsend discharge theory is also described.同时阐述了流光放电理...
Kaspar had spoken know-ledgeably about the state of agriculture in Europe.卡斯帕对欧洲农业状况发表了一番颇有见地的见解。He's spoken to a publishing firm. They're going to take him on.他和一家出版公司谈过了，他们打算雇用他。I have already spoken about th...
What does the theory of plate tectonics maintain?这板块构造学说的理论讲些什么?The idea of sea - floor spreading actually preceded the theory of plate tectonics.海床扩展说实际上早于板块结构理论.The platform deposits and rocks footwall are affected by ...