Collections can either model value types (element or composite-element) or entity reference types (one-to-many or many-to-many associations).

集合可以是值类型的(元素或组合元素)，也可以是实体引用类型的(one - to - many或many - to - many关联)。

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Grey system Theory, used as fabric hand evaluation system, constructing premium composite grey element model and obtaining the solution of premium degree can be used to evaluate the fabric hand.

对于织物风格评价这一灰色系统的评价问题，可以构造近优复合灰元模型，靠求解近优度的方法来评价织物。

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In addition, constructing the premium composite grey element model and solve for the premium degree can also be used to evaluate the fabric hand.

另外，还可用构造近优复合灰元模型求解近优度的方法来评价织物。

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