But like soldiers anywhere, what they do not like are mortar attacks where the bombs hit closer to the front line and cause more casualties.
不过就像世界上任何一处的士兵一样，他们讨厌迫击炮的轰击。迫击炮的轰炸离前线更近，造成了更多的伤亡。
2
On the paper, constrative experiment of fly ash cement mortar, fly ash line cement mortar and datum cement mortar has been done. The influence of mortar's performance fly ash made is analysised.