Some essentialities in operation and maintenance of high speed trains are discussed.论述了高速列车在运用检修中的若干个基本问题.There are many factors influencing spontaneous combustion in goaf and their relative essentialities are different....
Hypothesis: Revision hip arthroscopy is associated with unaddressed femoroacetabular impingement.假设: 髋关节镜治疗术后翻修与股骨髋臼侵犯有关.The dynamic SIF variation was found to lag behind the stress - pulse impingement by several microse...