R is capable of fully general object-oriented programming, but to understand this, you need to step back a bit in your thinking about what OOP is.
R能够进行完全面向对象的编程，但是要理解这种方式，需要重新回顾一下您对OOP的认识。
To review and analyse the quality reliability works in petroleum occupation and its circumstances, the general object and proposal of quality reliability in petroleum occupation are put forward.
回顾、分析了石油行业质量可靠性工作及其面临的形势，提出了石油行业质量可靠性工作的总体目标和建议。
To review and analyse the quality reliability works in petroleum occupation and its circumstances, the general object and proposal of quality reliability in petroleum occupation are put forward.
回顾、分析了石油行业质量可靠性工作及其面临的形势，提出了石油行业质量可靠性工作的总体目标和建议。
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