FIT#SURFS 擬合曲面#Add#Surfs 加曲面Add a surface to be referenced for fitting.為管接頭增加一曲面作參照。Remove#Surfs 刪除曲面Remove a surface from those being referenced for fitting.從給管接頭作參照的曲面中刪除曲面。No#Surfs 無曲面Use no surfaces; no additional fitting will be computed.不使用曲面；將不計算附加擬合。