deployment          
noun [ U ] uk/dɪˈplɔɪ.mənt/ us/dɪˈplɔɪ.mənt/
 有效运用;发挥…的作用
the use of something or someone in an effective way
  the deployment of technologies to address this challenge 为应对这一挑战的高科技运用 
  部署;调动
the movement of soldiers or equipment to a place where they can be used when they are needed
  The Chief of Police ordered the deployment of 300 troops to try to stop the rioting. 警察局长下令调集300名警察来镇压暴乱。