结果表明：管坯裂纹是因热轧宽钢带基材中存在大量聚集分布的稀土硫氧化物和氧化铝夹杂所致。
The results show that these cracks are caused by the inclusions of rare earth sulphur oxides and alumina distributing in mass in base steel for hot rolled wide strips.
按照本发明提供的方法制备出的稀土硫氧化物具有球形形貌，由此种稀土硫氧化物制备的材料具有较好的发光效果。
The rare earth oxides prepared by the method have a spherical shape, and therefore, materials prepared by using the rare earth oxides have remarkable luminous effect.
一种降低汽油中的硫含量的脱硫剂含有以催化剂重量为基准的含稀土Y型沸石15-60重％、无机氧化物10-60重％、粘土0-75重％；
A kind of hydrocarbon-oil desulfuration agent contains, on the catalyst-weight basis, 15-60% phosphorus-modified and rare-earth-contained Y type zeolite, 10-60% inorganic oxide, and 0-75% clay;
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