Replace R series is L series, not a classic appearance, not the grind arenaceous qualitative feeling, without the consideration of the magnesium antiroll frame.

接替R系列的是L系列，没有了传统经典的外表，没有了那磨砂的质感，没有了那兼顾的镁制防滚架。

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Reclassification to R&D work flow process, on the basis of which, frame optimization and technical enhancement is studied.

对开发设计作业流程重新进行了阶段划分，并在此基础上实施了作业过程结构优化和成本技术改善。

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This paper introduced some principles and methods of designing frame structure of R. C. specially shaped column in the northern area.

介绍了异形柱框架结构的设计原则和方法，通过具体工程实例，提出了北方地区采用异形柱框架结构设计时采取的一些方法。

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