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(dng)ǰλã > ИI(y)YӍ > ˾ӑB(ti) > a(chn)ДRܵa(chn)Ӌ

a(chn)͡ДRܵa(chn)Ӌ

³̎δ֪ ˚⣺ l(f)rg2021-03-01 14:00

a(chn)ͼДRܵa(chn).jpg

 

O(sh)е܉gmd=lmd’24/(1000t)

 

Md ——O(sh)е܉sgY(ji)gÿӹλt

 

l ——܉ЧLȣm

 

t ——؛ӹrghM(jn)rg

 

md’ ——܉λLȃd؛|(zh)kg/mȡֵ£

 

 

1iw˹Ƅmd’ =200~265k/mC(j)еmd’ =175~250kg/m

 

ţw˹Ƅ1/2wmd’ =295~400kg/m1/4wmd’=130~265kg/m

 

w˹Ƅmd’ =170~240kg/m

 

 

2~  Ã~܇Pb20kgPmd’ =486kg/m15kgPmd’ =405kg/m

 

 

3r  Ã~܇Pb2kgPmd’ =216kg/m



 

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