Eclipses in particular are relatively infrequent events and can be dated precisely.

The band's live performances since 2001 had been relatively infrequent and mainly limited to Southern California.

This is a viable option if the changes are relatively infrequent.

It is a marked structure in the sense of being relatively infrequent.

While these stations have an infinite supply, their placement is relatively infrequent.

After that, the internal activity probably ended, and the surface was shaped only by relatively infrequent impacts.

Transfer of scientists from one unit to another remained a major step, and a relatively infrequent one.

Samples are collected over a very short period of time and on a relatively infrequent basis.

In either case, rebalancing tends to work best when done on a relatively infrequent basis.

Even with relatively infrequent ticket checks there is a financial incentive to remain legal.