The device most often used to do this is a load balancer, which is an appliance that accepts requests from the outside world and hands them off to the next available application server.
进行这一操作最常用的设备是一个负载均衡器，这是一个从外部接收请求并将它们移交给下一个可用应用程序服务器的装置。
n. 器具；器械；[机]装置
device、
apparatus、
installation、
unit、
tool