R.F.

abbr. radio frequency.

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Reserve Force.

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rf.,

Baseball.

1. right field.

2. right fielder.

r.f.,

1. radio frequency.

2. rapid-fire.

RF (no periods),

1. radio frequency.

2. releasing factor.

R.F.,

1. French Republic (French, République française.

2. radio frequency.

3. rapid-fire.

4. representative fraction.

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abbr. radio frequency