running in

名词 n.
中文释义

英文释义

名词 n.
  1. The operating of a new engine (especially that of a motor vehicle) at less than its normal speed until proper working has been established. uncountable
    — For years past Pacific locomotives of all classes have worked between Kings Cross and Cambridge, […] both in order usefully to fill in gaps in their long-distance rosters, and also for running-in purposes after overhaul. Before the war the 7.18 a.m. slow from Kings Cross to Cambridge was a regular running-in turn for express locomotives stationed at Kings Cross shed.
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