As to the protective colloid using PVA or polyvinyl formal with the same concentration (7%), when the solid content of white glue enhanced 1%, the adhesive strength of PVAc would increase 0.27MPa and 0.33MPa respectively.是什么意思_As to the protective colloid using PVA or polyvinyl formal with the same concentration (7%), when the solid content of white glue enhanced 1%, the adhesive strength of PVAc would increase 0.27MPa and 0.33MPa respectively.在线翻译_英语_读音_用法_例句