The experimental research on 'diffusion bonding of spheroidal graphite cast iron and copper is conducted by adopting the self-made equipment of small vacuumdiffusion bonding.
采用自制的小型真空扩散接合装置，进行了球铁与铜扩散接合试验研究。
2
In allusion to the problems of vacuumdiffusion welded jet bits, a technique for manufacturing horizontally projected jet bits by means of vacuumdiffusion welding was put forward.
针对水平射流钻头钎焊工艺存在的问题，提出用真空扩散焊接代替钎焊制造水平射流钻头的新工艺。
3
Vacuum cooling is a complicated heat and mass transfer process supported by various theories such as diffusion, heat transfer, mass transfer and phase change.