如果必须传入抽象工厂对象，那么您必须添加一个新的公用构造函数或赋值(mutator)方法。

If an abstract factory object must be passed in, then you must add a new public constructor or mutator.

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提出一种新的外部扰动场赋值的建模方法。

For a special use a new modelling method of evaluating external disturbing potential is presented in this paper.

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