Characteristics and configuration of hepatocyte growth-promoting factor freeze-dried powder injection;
促肝细胞生长素冻干粉针剂的性状与结构
Procession and configuration design of multi-procedure complex compound die;
多工序复杂复合模的工艺及结构设计
Investigation of piston configuration of reciprocating pump operated in the mine;
矿场往复泵活塞结构研究