1. Puas muaj qhov ntu ruaj ruaj rau cov lim lim sintered? Kuv puas tuaj yeem yuav lub caij lim khoom? A: thov txim, lub lim lim sintered tsis yog ib qho khoom txheem. Feem ntau, nws yog tsim los ntawm cov chaw tsim khoom raws li cov lus qhia ntxaws ntxaws xws li qhov loj me, cov khoom, cov khoom siv thiab cov lim ...
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