1. 润滑器：lubricator oil strainer 润滑油滤器 | lubricator 润滑器 | lubricator 注油器

2. 注油器：lubricator 润滑器 | lubricator 注油器 | lubricity 含油性

3. 油雾气：空气过滤器 air filter | 油雾气 lubricator | 热交换器 heat exchanger

4. 加油器：lubrication 润滑 | lubricator 加油器 | lug 接线片

noun

1. a substance capable of reducing friction by making surfaces smooth or slippery

Synonym: lubricantlubricating substancelube