The new variational principles can fully characterize the initial-boundary-value problem of this dynamics.
这种新的变分原理能反映动力学初[值]-边值问题的全部特征。
According to the particularity of initial mining and discharging work on plough mining face in Malan Coal Mine,this paper expounds the improvements for the techniques adopted in initial mining and discharging on the mining face.
根据马兰矿刨煤机工作面初采初放工作的特殊性,阐述了对工作面初采初放工艺的改进。