The two sides exchanged fire with mortars and small arms.

双方以迫击炮和轻型武器交火。

《柯林斯英汉双解大词典》

The influence of two kinds of grinding aids A and B on flowability, dispersed state of particles and performance of mortars were investigated.

研究了助磨剂对普通硅酸盐水泥的流动性、颗粒分散度及其砂浆性能的影响并对作用机理进行了探讨。

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The two sides exchanged fire with artillery, mortars and small arms.

双方交火时动用了大炮、迫击炮和轻武器。

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BAGHDAD, Iraq (CNN) -- Two or three mortars or rockets were fired late Thursday into Baghdad's "green zone, " in the vicinity of the U.S.-led administration's headquarters, a U.S. military spokesman said.

CNN: Military investigates hostile fire in 'green zone'

It says that since the truce came into effect a total of nine rockets and mortars have hit and two have been intercepted.

BBC: Israeli strikes and militant rockets test Gaza truce

Eight American troops and two Afghan security force members were killed Saturday when militants opened fire on an outpost with rockets, mortars and heavy-caliber machine guns, according to an initial U.S. military report on the battle.

CNN: Obama adviser: Afghanistan in no immediate danger of falling