2, make steel-making to decoke use magnesian noodles or vermicelli made from bean or sweet potato starch (grain) occupation standard;
2、制定炼钢脱硫(粒)行业标准;
2, make steel-making to decoke use magnesian noodles or vermicelli made from bean or sweet potato starch (grain) occupation standard;
2、制定炼钢脱硫(粒)行业标准;
2、制定炼钢脱硫(粒)行业标准;
2, make steel-making to decoke use magnesian noodles or vermicelli made from bean or sweet potato starch (grain) occupation standard;
Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.
含系、
质容
石是
成的物质基础,区域变质及混合
化作
、构造活动是
成的必要条件。
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