preset mechanism

The application of prerotating mechanism on pistol;

预转机构在手枪上的应用

It has undergone a changing process of over 70 years for China s preliminary hearing organs to be established,combined with the investigative departments,independent from the investigative departments again,and finally cancelled.

我国的预审机构从建立到与侦查部门合并,又从侦查部门分离出来单独设置直至撤销机构经历了七十多年的演变过程;预审在公安机关办理刑事案件中有着重要的地位和作用,即预审是审理刑事案件不可替代的程序,它是公安机关检验案件审理质量、保障依法办案、不枉不纵的最后一道关口。