proper thickness of soil layer 适宜土层厚度
outer layer of choroid proper 固有脉络膜外层
inner layer of choroid proper 固有脉络膜内层
Then, gradually, application functionality can be abstracted into services, which are managed via dependency injection and which reside in a proper service layer.
然后，程序功能就会渐渐的抽象为服务，它是通过依赖注射来管理的，并位于合适的服务层中。
Frameworks can also help beginners to build more stable apps by ensuring proper database interaction and coding on the presentation layer.
这些框架还通过确保正确的数据库操作以及只在表现层编程的方式帮助初学者创建稳定的程序。
We will further address the proper modeling between industry layer and the business domain layer in Section 3.1.3.
在第 3.1.3 部分中，我们将进一步说明如何在行业层和业务领域层之间进行正确地建模。
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