The cutterhead and rock mass characteristics affect the excavation efficiency of full face rock tunnel boring machine (TBM) strongly.
全断面岩石掘进机(TBM)的破岩效率主要受刀盘设计和岩体特征的影响。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
根据月球研究和行星际飞行任务的需要,为了提高火箭的推重比,要为运载火箭新安装一个第三子级。
Based on the geological result of the scour pit of the Danjiangkou Project, it is expounded that rock mass characteristics are the internal factor in the formation of scour pit.
以丹江口工程冲刷坑地质调查成果为例,阐述了岩体特征是影响冲刷形成的内在因素。
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