From the viewpoint of reliability and practicability,a general design method and the related considerationsfor transistor-inverted welding power supplies are pr
In this paper,a slow bending speed varestraint test method with con-tinuously adjustable deformation rate for testing hot cracking sensitivity is de-veloped and
Incorrect sitting postures in teenagers will result in myopia and hunchback. In this paper, a non-wearable posture correction system is proposed based on thin f
The welded joint of dissimilar heat-resisting steels 20Crl2MoV(F12)and 12 Cr2MoWVTiB(102)generally works around 600°C.In this paperthree kinds of ferritic