词汇	dual fractures
释义	dual fractures 双裂缝
随便看	method of variation coefficient method of variation of constant method of variation of constants method of variation of coordinates Method of variation of parameter method of variation of parameters method of variation position transformation method of variation posititan transformation method of variation replacement method of vector symbol method of vegetative approachment method of vehicle maintenance on universal post method of verbal estimation method of verification method of verstehen method of vertehen method of vibration method of virtual displacement method of virtual load method of virtual work method of viscosity measurement method of vision research method of voice production method of volume method of voting