The composite role of the fibers and rubber powder makes the decline trend of strength of mortar slow.

纤维和胶粉的复合作用使砂浆的强度下降趋势减慢。

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Experimental study of the same dose of antibiotics and Xylooligosaccharides composite role of broiler production performance and economic impact.

本实验研究同剂量低聚木糖和抗生素复合作用对肉鸡生产性能和经济效益影响。

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A special case of a composite role is where a business object can only be uniquely identified when combining its key attribute with its parent's key attribute.

组合角色一个特殊情况是，业务对象只能通过将其键属性与父级的键属性进行组合来唯一标识。

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