Series GYW Lub Tshuab Nqus Tsev Mus Ib Txhis Sib Nqus Lim
Cov xwm txheej ua haujlwm zoo tshaj plaws ntawm cov lim dej no yog raws li nram no: qhov sib nqus tshwj xeeb ntawm cov khoom khov hauv cov pulp tsis tsawg dua 3000 × 0.000001cm3 / g, qhov loj me ntawm cov khoom me me yog 0.1-0.8 hli, thiab qhov concentration ntawm kev pub mis yog ≥ 60%.






