(j)GB 15763.2-2005ðȫ 2֣䓻ИI(y)о(sh)(j)䓻Աͨ0.3%~3%֮gMܸ^䝓ڵİȫ[ǸߌӽI(lng)ͨ^ϵy(tng)Լg(sh)ֶνL(fng)UP(gun)IشʩԭһƲ(ni)(yng)ˮƽ䓻Աı|(zh)Դڲ(ni)(yng)ʧT 1. 懣NiSs|(zh)׃ԭƬеڟ̎l(f)weÛ(do)¾ֲ(yng) 2. ᑪ(yng)cCе(yng)Bӣ䓻ˇγɵı扺(yng)c(ni)(yng)豣քӑB(ti)ƽˇƫ@ԱL(fng)U g(sh)ߣ 1. (yu)䓻(sh)ͨ^{(dio)ӟضsL(fng)ԣ͚(yng)ֵ 2. ԭƬYxxõs|(zh)ă(yu)|(zh)ԭƬԴ^pȱ ϑ(yng) (yng)ֲŴֲȱݵӰ䓻珝䓻и@(j)ASTM C1048(bio)(zhn)(yng)Կͨ^·ʽ