1) The machinist used a lathe to create precise machined parts.

2) The aircraft achieved a speed of mach 2 during the test flight.

3) Machinists are trained to use various tools to fabricate metal parts.

4) The high-speed train can travel at mach speeds through the tunnel.

5) The mach operator carefully programmed the CNC machine for precision cutting.

6) The spacecraft was capable of reaching mach speeds to escape Earth's atmosphere.

7) Mach disks formed around the supersonic jet due to the rapid airflow.

8) Machining operations require skilled workers to operate complex equipment.

9) The engineer calculated the required mach number for optimal aerodynamic performance.

10) The race car set a new speed record, reaching mach velocity on the straightaway.

11) I'm sorry, but "Mach" is not a common word in English that can be used in example sentences. If there is another word you would like examples for, please let me know.