单词	derate
释义	derate /diːˈreɪt / verb [with object] 1British (Under the former rates system) remove part or all of the burden of rates from (a property or business): (as noun derating) I shall shortly announce the level of industrial derating for next year... That's not acting as a prop for the share price. The shares have been derated. The derating may be overdone, if recent reports of bids by management teams at the three companies are anything to go by. We believe that investors should be investing in growth stocks following the significant derating of many of these stocks over the last 15 months. 2Reduce the power rating of (a component or device): the engines were derated to 90 horse power... He said the design is basically a 9,000-lb-thrust engine, heavily derated to specific airframe power requirements. The transmission derates the outputs of both engine types to 450 shp for takeoff and 380 shp for max continuous thrust. The thrust of the two turbofan engines on underwing pylons would be uprated or derated to reflect the number of seats, allowing the same engine to be used on all three versions.
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