equipment是不可数名词，作“装备”，“设备”解。不能说equipments或an equipment。
例如：The building is supplied with modern office equipment.
这幢楼配备了现代化的办公设备。
You will be satisfied with the kitchen equipment here.
你一定会对这里的厨卫设备感到满意。
I need three pieces of equipment.
我需要三件设备。
We have lots of factories with modern equipment.
我们拥有许多设备现代化的工厂。
Radar equipment helps us a lot in our daily life.
雷达装置在日常生活中颇有用处。