rpm

abbr 缩写 = revolutions per minute (esp as a measure of engine speed) 每分钟的转数（尤指发动机的）: 2500 rpm 2500转/分.

rove, rover, roving commission, row, rowan, rowdily, rowdiness, rowdyism, rowdy, rower, rowing-boat (also esp US `row-boat), rowlock, royal, royal blue, Royal Commission, Royal Highness, royal jelly, Royal Ordinance, royalist, royally, royalty, RRP, RSA, RSC, RSM, RSPB, RSPCA, RSV, RSVP, Rt Hon, Rt Rev (also Rt Revd), RU, rub, rub (sb/oneself/sth) down, rub (sth) off, rub away, rub down, rub off, rub out, rub sb out, rub sth in/into sth,