1、Application of the PEC drilling fluid system in BZ 25-1 oilfield
PEC有機(jī)正電膠鉆井液體系在BZ 25-1油田的應(yīng)用

2、NK Activity in PEC and Spleen Cells with the Stimulation of BCG
BCG活化大鼠腹膜及脾NK細(xì)胞的活性

3、China is a nation rich in pec try.
中國(guó)是一個(gè)詩(shī)歌的國(guó)度。

Pec翻譯