Click the Tools menu, and then click on League of Nations. On the Advanced TAB, scroll to the Head in the Sand section and check Settings for your exports to Iraq.

点击工具菜单，和然后点击国家同盟。在高级选项卡中，滚动滚动条到沙子部分，并检查设置您向伊拉克的出口物资。

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The processes of sand casting are discussed in this section, including patterns, sprues and runners, design considerations, and casting allowance.

本节讨论砂型铸造工艺，包括型模、浇注口、浇道、设计考虑因素及铸造余量。

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White fused alumina products including section sand, grain-size sand; fine powder and micro powder are widely used in refractories, abrasives and other industries.

白刚玉段砂、粒度砂、细粉、微粉在耐火材料、磨料磨具等不同行业具有广泛的用途。

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