首页 / 百科 / 内容详情 Unlike crystals, glasses do not have well defined melting points, but exhibit a（）Tg. 2022-04-30 4次阅读 crystals glasses defined Unlike crystals, glasses do not have well defined melting points, but exhibit a（）Tg. 正确答案：glass transition temperature The clinker product of Portland cement need to add gypsum to（）the（）process. Glasses are（）, not（）at all. 猜你喜欢 Olivine crystals normally form granular habit.。 Aspirin occurs as white crystals, granules or powder. It is odorous, and has a heavy acid taste.