Continuous operational reference system is one of the infrastructures of spatial data, CORS system nationwide network is imperative.
连续运行卫星定位服务系统(CORS)是空间数据基础设施之一，CORS系统全国联网势在必行。
Based on the operational principle of on/off slip of continuous-circulation system, the forced state of drill pipe was clarified.
从钻井连续循环系统上卸扣卡瓦的工作机理入手，弄清了钻杆工作时的受力状态。
Based on the operational principle of on/off slip of continuous-circulation system, the forced state of drill pipe was clarified.
从钻井连续循环系统上卸扣卡瓦的工作机理入手，弄清了钻杆工作时的受力状态。
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