基本解释n.软膜abbr.个人投资管理委员会（=Personal Investment Authority）同根派生 PIA相关词英汉例句A network of extremely small blood vessels passing between the pia mater and the cerebral cortex.大脑绒被从软膜和大脑皮层之间穿过的极细的小血管形成的网PIA更多例句