Longis隆吉longadj.长的；冗长的；久的；长音的adv.长期地；久地；用于名词后强调某事发生在某整段时间v.渴望n.长时间；长音节；囤积商品者long-span girder大跨度梁long taper die tap板牙丝锥long slot of stand机架长槽long chort winding长距绕组long-term change长期变化long-term trends变化趋势long-period cost[经] 长期费用long length charge[经] 超长费long- run effect长期效应long time contract长期合约