Preventive measures for head warpi ng and bending of hot rolled narrow strip;

Methods Tissues on the surface of cavernosa of ventral penis of 23 hypospadiacs with penile curvature were serially sectioned and compared to 3 concealed penis and 3 scar tissues.

In paper,writer analyses change regularities of LCB,sets up maths model of bending section ,compiles CASIO fx-4500P calculate program and discusses a new way of setting out in gradual change bending sections using electronic total station instrument on the basis of practice work in Xiaolangdi orifice tunnel project.