青云翻译

According to Principles of metal materials, combined with gas quenching characteristics, to optimize one of the c, cr, mn, ni, v and other elements of the content of the raw material to form mold ring shepherd standard.

According to the principle of metal materials, combining characteristics of gas-quenching, optimizing one of c, Cr, Mn, Ni, v, and other content of the element to form Shepherd ring die standards of raw materials.

According to the metal material study principle, the knot wrangles quenches the characteristic, optimizes C, Cr, Mn, Ni, V and so on the element content, forms tends sheep the link mold raw material standard.

In accordance with metallic materials, combined with pre-school principles, optimization of quenching characteristics which the C Cr , , , Mn Ni V , elements such as the content, form a sheep model of Central standard raw materials.

According to the principle of metal materials, combining characteristics of gas-quenching, optimizing one of c, Cr, Mn, Ni, v, and other content of the element to form Shepherd ring die standards of raw materials.