Sinatra 1.0版的开发进度缓慢的原因，是其采用了语义版本模型

We’ve adopted the Semantic Versioning Model.

youdao

研讨了产品数据管理的版本模型和混合型版本管理的实现方法策略。

Research the strategy of managing revision model and blending revision model of product data.

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并论证了新的版本模型更安全、性能更高、更方便集成，能有效地支持视图，保证产品数据的完整性、一致性、有效性和可跟踪性。

This paper demonstrates that the new model is more secure and high-powered, good for view management and information integration, and can keep consistency and tractability of product data.

youdao

I am going to put up the most primitive version.

首先说一下波尔模型最原始的版本。

麻省理工公开课 - 固态化学导论课程节选