其集成测试中采用自底向上方法，先把低层模块组织成实现某个子功能的模块。

Its integrated testing are carried out from down to up and use lower level module organization to realize the sub-function module at first.

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依赖倒置原则声明了我们应该将高层模块和低层模块解偶，在高层类和低层类之间引入一个抽象层。

Dependency Inversion Principle states that we should decouple high level modules from low level modules, introducing an abstraction layer between the high level classes and low level classes.

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但其他地方的模块化和预制建筑大多是低层建筑。

But modular and prefabricated buildings elsewhere are, for the most part, low-rise.

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