N（11）=N11;
N（12）=N12;
N（13）=N13;
N（21）=N21;
N（22）=N22;
N（23）=N23;
N（31）=N31;
N（32）=N32;
N（33）=N33;

for?i=1:3
????for?j=1:3
????????B（（i-1）*3+j1）=-diff（N（ij）x2）;
????????B（（i-1）*3+j2）=-diff（N（ij）y2）;
????????B（（i-1）*3+j3）=-2*diff（diff（N（ij）x）y）;
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????????0??2014-04-10?13:04??src\3Q.f90

?????文件???????9282??2015-04-26?13:36??src\assem.f90

?????文件??????38801??2015-05-16?18:09??src\atf1.f90

?????文件????????296??2015-05-14?23:29??src\calcu.m

?????文件???????4989??2015-04-10?18:25??src\datain.f90

?????文件???????3259??2015-04-26?13:36??src\elcal.f90

?????文件???????3003??2015-04-26?13:36??src\globals.f90

?????文件??????11409??2015-03-12?18:10??src\memalloc.f90

?????文件???????2793??2015-03-12?18:10??src\memTest.f90

?????文件??????10068??2015-04-30?16:07??src\quadrilateral.f90

?????文件??????10306??2015-03-12?18:10??src\stap.f90

?????文件???????7564??2015-04-26?13:36??src\truss.f90

?????目錄??????????0??2015-05-16?18:09??src

-----------?---------??----------?-----??----

???????????????101770????????????????????13