1. It's a very simple machine.

2. The beauty of this kind of patterning is that you can produce really exciting and elaborate designs with the simplest machines.

3. Lever: Simple machine used to amplify physical force.

4. This is a simple machine.

5. He can mend a simple machine.

6. The lever is a common simple machine.

7. The pulley is a simple machine.

8. The inclined plane is a simple machine.

9. The typical screen is a relatively simple machine to operate.

10. Safeguard from simple machine oneself can make more sophisticated shoemaking machine now.

11. This device is an simple machine and easy to operate[http://], which can replace grinding.

12. Plus points were the number of little extras on an apparently simple machine - shaped handle and height adjustment being particularly worthwhile.

13. Have electronics profession level of technical secondary school, electrician's foundation, electronics electrocircuit as well as simple machine knowledge which can all be put into use in fulfillment.