CR land in China 华润置地在中国
The stations are managed by one control center, which is described by China Railway Beijing Group—also known as CR Bejing—as an "intelligent (智能的) brain".
这些车站由一个控制中心管理。该中心被中国铁路北京局集团，也就是北京铁路局，称为一个“智能大脑”。
This article introduces the technical characteristic and the technology of processing and application about the CR - 244 polychloroprene made in China.
介绍了国产CR-244型氯丁橡胶技术性能和加工应用技术。
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