急急急，各位高手救命啊！我12小时内必须要回复

  谁能把这一段帮我翻译一下，谢谢，不然我可完了Analysis of friction stir welds using an inverse problem approach R。 W。 Fonda and S。 G。 Lambrakos A preliminary analysis of friction stir welds is presented using an inverse problem approach which entails representing the rotating tool as a three-dimensional surface distribution of heat sources。
   In this approach, the heat generated from these heat sources is proportional to the local velocity of the tool surface, but the resulting temperature ® eld can be adjusted within this constraint so that the shapes of the calculated three-dimensional temperature isotherms are consistent with experimental weld cross-sections。
   In the present work, experimental information about the local mechanical properties and transformation microstructures observed in the heat affected zone is used to scale the calculated temperature ® eld in a consistent manner。
   In addition, procedures are discussed which can extend this approach to include more complex aspects of friction stir welding and determine an absolute scale for the calculated temperature ® eld。
   STWJ/284 The authors are in the Materials Science and Technology Division, Code 6324, Naval Research Laboratory, Washington, DC 20375± 5000, USA (fonda@ )。
   Manuscript received 31 July 2001; accepted 6 November 2001。 # 2002 IoM Communications Ltd。 。