vibrations per hour造句

• More vibrations per hour yields higher timekeeping resolution, and usually indicates a higher precision mechanical movement.
• The movement was originally manufactured and released in 1969 and remains the highest VPH ( vibrations per hour ) mass-produced movement on the market at 36, 000 VPH . Rolex purchased these movements for the Daytona, and then modified the movement from 36, 000VPH to 28, 800VPH and made a few other subtle changes.
• The first co-axial movement to be brought to the public was the Omega cal . 2500, with different variations being listed as A, B, C, and D . This movement was built from the Omega " in-family " cal . 1120 ( finished chronometer grade ETA 2892-A with two extra jewels ) A, B, and C are similar two tier co-axial movements, but C is the first version to solve certain problems prevalent in A and B . For example, the vibrations per hour were originally 28, 800 ( standard for most Swiss watches with Swiss Lever Escapements ) but later lowered to 25, 200 ( 7 vs 8 v beats a second ).