The thixotropy index was 3.6 that was a very good thixotropy .

触变指数为3.6，体现出很好的触变性。

A simple pressure-reduced capillary viscometer was designed . It was used for studying the abnormal rheological properties of surfactant solutions , such as fluid patterns , thixotropy and negative thixotropy .

安装了一种简单的减压型毛细管粘度计，用于测量非牛顿性表面活性剂溶液的流变性质，如判断流体类型，判断流体的触变性及负触变性等。