u坍
uʹò(dng)ɵıB̎
1. nnuƤЬӡnƯׄ20—30犺òɡЩBu(ni)r(sh)g^L(zhng)nݕr(sh)gׂ(g)Сr(sh)
2. īˮϞù׃γɵùc(din)ֻ茢ƯׄͿn̎ݎ犣òͿ
3. ˮˮˮPPߣʹ}Һױ
4. ᡢӛ̖(ho)PϞܣʹÉA坍ЙC(j)܄ͪϩȥȥۄ
5. zNӡȥʹ÷ʹ20%—40%ĚcҺݶʮСr(sh)òȻ30%—50%}Һʮ犺ò
6.ʯҹʹ坍ϴ
ע1.ϳۄʹÕr(sh)z2.nˮuϴɃ
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