Sentence examples for periodic replacement from inspiring English sources

Changes in the HA of circulating viruses (antigenic drift) require periodic replacement of the vaccine strains during interpandemic periods.

This was largely owing to difficulties in replacing filters for ICOH defluoridators that required periodic replacement, a process the ICOH was unable to sustain.

Periodic replacement of that belt is essential, and so is adding or replacing brake fluid, oil and antifreeze.

For this reason, it must be designed for periodic replacement.

Some printers also require periodic replacement of the imaging drum, a part that can cost $175 or so.

Provox 2 voice prosthesis requires periodic replacement due to biofilm proliferation which causes malfunctioning of the valve.

In fact, batteries have finite lifespans and require periodic replacements.

Shutdown also means the cessation of a batch PAI process unit or any related individual piece of equipment required or used to comply with this part or for emptying and degassing storage vessels for periodic maintenance, replacement of equipment, repair, or any other purpose not excluded from this definition.

Because modern chip factories take about two years to bring on full stream, to gain the beneficial impact of new generation capital equipment that requires periodic wholesale replacement due to obsolescence, the next big semiconductor supply wave won't take place until 2011-2012.

Brachionus populations were allowed to grow for 12 days (with periodic medium replacement) at which time sampling was initiated.

The alternative to self-containment and local supply is continuous or periodic resupply and replacement from stores prestocked at bases or other accessible points.