其中传输控制子系统是实时视频流的一项关键核心技术。
Among them transmission and controlling subsystem is the key technology of real-time video streams.
数学模型是工程实践的关键核心技术，是多轴车辆转向研究的基础。
Mathematical model is a key core technology of engineering practice and the basis of multi-axis steering of research.
QOC是全液压地下卷取机的关键核心技术，该技术将直接影响钢卷的卷取质量。
QOC is the key core technology and the technology affect the roll quality directly.
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