The process structure characteristics and the quality demand of the battery covering of mobile telephone were analyzed, the structure and working process of the injection mold were introduced, the key points in designing the inner side delitescent sprue and designing the mechanism of the three orientation inner side core-pulling with the assembled slider were stated in detail.

Various individuals who share the same or similar sense of truth form a potential group,and literature is one of the approaches to turn this potential group which unites different individuals into a distinct group.

Determination of catecholamine secreted from rat adrenal medulla by in vivo voltammetry;