词汇	half sinusoid
释义	half sinusoid n.半正弦曲线
随便看	upgrade system upgrade telephone number upgrade the land upgrade the pay upgrade the quality of police upgrade the status upgrade to Upgrade Training upgrade version upgrade winch upgradient up gradient upgradient flux upgradient transport upgrading up-grading upgrading and downgrading upgrading and expansion upgrading and expansion construction upgrading and expansion engineering upgrading and optimizaing upgrading and rebuilding engineering upgrading and reconstruction upgrading and reformation upgrading and reforming