镁铝尖晶石的合成方法有电熔法和烧结法.The synthesis methods of magnesia - alumina spinel are electro - fusion and sintering process.红色的镁铝榴石是云南最重要的宝石资源之一.Red pyrope is one of the most important gem resources in Yunnan.镁铝硅胶泥加工销售.Meilu: clean...
Crude price upsurges the influence crude price to economy upsurges continuously.原油价格高涨对经济的影响原油价格持续高涨.Abrupt one day, they feel changed, torrent upsurges draught the heart.忽然有一天, 他们感觉到变了, 心中一下子涌起激流....