P ositive Practices 正向机构管治

ositive cash flow 正现金流量

ositive rotary pump 回转容积泵

P ositive 积极乐观

a ositive 同位格的

ositive economics 实证经济

ositive oxidation state 正化合

ositive Displacement Flowmeters 容积流量计

substantial lawp ositive law 实体法