Do the surgery under the arthroscope,clean up the educt in the joint and the pathological synovial membrane.

镜下手术,清理游体及病变滑膜。

It has been proved that it is economical and feasible to eliminate educt alkali from coarse sodium tungstate with electrodialysis method of negative ion (1) selective membrane.

一价阴子选择膜电渗析法从粗钨液中脱除游碱是经济可行的。