Cambridge English for Engineering
1. bearing - ✔✔mechanism containing balls or rollers placed around a
component which spins, to reduce friction
2. lubricant - ✔✔liquid or viscous solid used to reduce friction between
moving parts whose surfaces are touching
3. (electric) motor - ✔✔device which transforms electrical energy into
rotary motion
4. pile - ✔✔foundation comprising a vertical column of concrete in the
ground
5. propeller - ✔✔device with spinning blades used to push boats or
aircraft through water or air
6. reinforcement - ✔✔networks of fibres or bars placed inside a
material to strengthen it
7. remote control - ✔✔system used to control a device or vehicle from
a distance, usually via a wireless connection
