任春艳

Constant temperature device of engine oil

赵小平, 孙丽, 李小亮, 2011 .

Engine oil adaptor component

赵小平, 程军, 孙丽, 2011 .

Driving protection circuit for brush electronic fan

陈光明, 李奇峰, 任春艳, 2014 .

Quick positioning carriage for engine test stand

赵小平, 程军, 孙丽, 2011 .