词汇	难然
释义	难然 nán rán茂盛貌。難然
随便看	speed selection circuit speed selector speed selector switch speed senor speed sense speed-sensing speed sensing capability speed sensing control speed sensing device speed-sensing device speed sensing device machine speed sensing device machine, electric speed sensing element speed-sensitive speed-sensitive contact speed-sensitive output voltage speed-sensitive relay speed sensitive release speed-sensitive release speed sensitive switch speed-sensitive switch speed sensitive switch control speed-sensitive transformation ratio speed sensitivity speed sensitivity characteristics