Ubwino 1. Kuwala: Kuchulukana kwa magalasi a resin ambiri ndi 0.83-1.5, pomwe galasi la kuwala ndi 2.27 ~ 5.95.2. Kukana kwamphamvu: Kukana kwa mandala a utomoni nthawi zambiri kumakhala 8 ~ 10kg / cm2, kumakhala galasi kangapo, kotero ndikosavuta kuthyoka, kotetezeka komanso kolimba.3. Kuwala kowala bwino ...
Werengani zambiri