| 1. | Failure reasons of impellers in a pump of an aromatic hydrocarbon extracting system were analyzed by means of microcoulometric detector , spectroscopic methodology , optical microscopy , scanning electron microscope and x ray diffraction 摘要采用微库仑法、光谱法、光学显微镜、扫描电镜、 x射线衍射仪等手段对芳烃抽提系统的3105泵叶轮进行了失效分析。 |