sand trap section 砂槽系统
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。
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。
The pools of sand lens in the third section of Shahejie Formation in Niuzhuang sub-depression were analyzed.
对东营凹陷牛庄洼陷沙三段砂岩透镜体油藏的成藏过程进行了分析，研究了岩性油气藏的成藏机理。
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