%0 Journal Article %T Method for detecting semi-solid lubricating grease content by plate capacitance sensor based on differential technology %A Cheng, Xuezhen %A Xin, Shouhao %A Li, Jiming %J Proceedings of SPIE %V 12161 %P 121611K-121611K-8 %@ 0277-786X %D 2022-02-14 %I SPIE %~ DeepDyve