单词	extrusion ram
释义	extrusion ram 挤压杆
随便看	principle of ray optics principle of reaction principle of real estate principle of reality principle of realization principle of real right legal Principle of Reasonableness principle of reasonable universality principle of reasoning principle of reatment principle of recapitulation principle of reciprocal demand principle of reciprocity principle of reciprocity international practice principle of recognizing responsibility Principle of Reconsideration in Advance principle of recording principle of recycle principle of recycling and regeneration principle of reduced cues principle of reduction principle of redundancy of potential command principle of reflection principle of reform principle of relative constancy