有人可以幫忙解釋一下這些 APDL 的指令是什麼意思嗎?

sound501

如題所說
我目前有幾個APDL Code 看不懂
希望有人可以幫我解釋清楚

sf,SOURCE,inf
sf,OUT,inf

MY_PRES_AMPL = 1
MY_VELO_AMPL = -2*MY_PRES_AMPL/(MY_DENS*MY_SONC)
sf,SOURCE,shld,MY_VELO_AMPL

hropt,full


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/show,png
/rgb,index,100,100,100, 0
/rgb,index, 80, 80, 80,13
/rgb,index, 60, 60, 60,14
/rgb,index,  0,  0,  0,15
/color,curve,blue,1

MY_AREA=0.00095314
MY_PIN = MY_AREA*(MY_PRES_AMPL/sqrt(2))**2/MY_DENS/MY_SONC

/post26
cmsel,s,OUT
N_OUT=ndnext(0)
allsel,all
cmsel,all

nsol,2,N_OUT,pres
abs,3,2,,,,,,1/sqrt(2)
prod,4,3,3,,W_OUT,,,MY_AREA/(MY_DENS*MY_SONC)

filldata,5,,,,MY_PIN
varnam,5,W_IN

quot,6,5,4
clog,7,6,,,TL,,,,10
/title,Plot of transmission loss
plvar,7
finish
/show,close

/post1


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這兩組Code 希望有人可以幫忙