Recean.雷恰(在罗马尼亚；东经 22º52' 北纬 44º20')RECabbr.录制（=record)reclamation project围垦工程rectifier photocell整流光电管receiving objective接收物镜rectilineal tracery垂直式花格窗reciprocating grate往复炉篦reciprocating cycle往复周期rectilinear current线性电流recuperation center康复中心reclamation economy农垦经济recombinant vaccine重组疫苗