How to simulate the anchoring effect of bolts is discussed.探讨了如何在计算中考虑锚杆的锚固效应.Drilling, anchoring and grouting together is a particular form of anchoring - grouting.钻锚注支护属于锚注支护的一种特殊形式.After support structure optimization...
比利时人依照国际联盟的授权接管了卢旺达。The Belgians took over Rwanda under a League of Nations mandate.他们也从事非法采矿, 从中,卢旺达也获利.They also do illegal mining, from which Rwanda profits as well.许多卢旺达人有了医疗保险,另外,卢旺达本年度的税收增加12%,GDP也将会%.Tax revenue m...