This report described an Apache helicopter firing warning shots after coming under fire. Its reaction was described as “an escalation offorce.”
该报告中描述了一架阿帕奇直升机在遭遇攻击后发射警示弹，而它的反应被形容为“火力升级”。
2
Objective: To investigate the effect of shoe heel height on the ground reactionforce and the center of sole force.
目的：通过研究女性行走时地面反力和鞋底压力中心，探讨鞋跟高度对地面反力和鞋底压力中心的影响。
3
If an arm is stretched forward under water resistance is increased and a reactionforce back ward is developed both of which would contribute to negative acceleration.