RPMs or RPM : Common Errors in English

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    RPMs or RPM





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    RPMs or RPM :



    “RPM" means “revolutions per minute," so it is redundant to add an S at the end of the abbreviation—it’s already plural.


    Adding the S is so common among people working with engines that it’s not likely to get you into trouble, but you will impress some by avoiding it.


























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