PVI started talking to the Massachusetts - based company last year about a potential takeover.

去年,元太开始与这家总部位于马萨诸塞州的公司就潜在的收购展开谈判.

Portal venous velocity index (PVI) was defined as the ratio of PVV to graft weight (GW), and portal flow volume index (PFI) as the ratio of PVF to GW.

门静脉流速指数（PVI）被定义为PVV与移植物重量（GW）的比率，门静脉血流量指数（PFI）为PVF与GW的比率。