obversion的中文意思是: 倒转
The design of hydraulic Obversion device for roller bearing
轧辊轴承座液压翻转装置设计
improving highway Foudation by means of vacuum surcharge Preloading: Obversion and numerical analysis
真空-堆载联合预压法加固高速公路路基：表面沉降测试和数值分析