| 1. | Definition and classification of grades of steel 钢等级的定义和分类 |
| 2. | Definition and classification of grades of steel 钢的等级定义和划分 |
| 3. | Strength classes grades of steel barokok . org 普通钢筋强度等级30 |
| 4. | Definition and classification of grades of steel ; german version en 10020 : 2000 钢的等级定义和划分 |
| 5. | Strength classes grades of steel bar 普通钢筋强度等级 |
| 6. | Classification of grades of steel . examples of classification related to european standards 钢等级的分类.与欧洲标准有关的分类实例 |
| 7. | Rust grades and preparation grades of steel surfaces before application of paints and related products 涂装前钢材表面锈蚀等级和除锈等级 |
| 8. | Various grades of steel cords offer good running characteristics , even with high tractive loads 不同级数的纲丝芯令皮带有更好的拖拉力。 |
| 9. | In this paper , the internal transverse cracks of continuous casting slabs of a niobium - bearing peritectic grade of steel are investigated using electron probe microanalyser and optical microscope 摘要连铸坯厚度中心存在的内裂纹在后续的轧制过程中轧不合而对产品的质量带来重大的影响。 |