单词	frictional work
释义	frictional work 摩擦功
随便看	the huanghe river valley the Huanghe Valley the huanghua depression The Huanghuaihai Summer Maize Region The Huang Lu Fast the Huangpu Duke Grotto the Huangpu River the Huangpu Spirit the huan nature the Huan River the Huarong dialect The Huaxian earthquake the Huaxia people The Huaxi Village the Huayaoyi people the Hua-yen School The Hua-yen School the hua-yen sutra the Huayi Order the hub the hubble space telescope the hubbub of city life the Hubei New Army The hub is bus powered The hub is self powered