(j)GB 15763.2-2005ðȫ 2֣䓻ИI(y)о(sh)(j)䓻Աͨ0.3%~3%֮gMܸ^䝓ڵİȫ[ǸߌӽI(lng)ͨ^(gu)ϵy(tng)Լg(sh)ֶνL(fng)U(xin)P(gun)IشʩԭһƲ(ni)(yng)ˮƽ䓻Աı|(zh)Դڲ(ni)(yng)ʧ⣬T 1. 懣NiSs|(zh)׃ԭƬеڟ̎l(f)weÛ(do)¾ֲ(yng)С 2. ᑪ(yng)cC(j)е(yng)Bӣ䓻ˇγɵı扺(yng)c(ni)(yng)豣ք(dng)B(ti)ƽˇƫ(hu)@ԱL(fng)U(xin) g(sh)(du)ߣ 1. (yu)䓻(sh)ͨ^(gu){(dio)ӟضsL(fng)͚(yng)ֵ 2. ԭƬYxxõs|(zh)ă(yu)|(zh)ԭƬԴ^pȱ ϑ(yng)(chng) (yng)ֲ(hu)ŴֲȱݵӰ푣䓻珝䓻и@(j)ASTM C1048(bio)(zhn)(yng)Կͨ^(gu)·ʽ