The experimental research on 'diffusion bonding of spheroidal graphite cast iron and copper is conducted by adopting the self-made equipment of small vacuum diffusion 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。

youdao

In allusion to the problems of vacuum diffusion welded jet bits, a technique for manufacturing horizontally projected jet bits by means of vacuum diffusion 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。

youdao

Vacuum cooling is a complicated heat and mass transfer process supported by various theories such as diffusion, heat transfer, mass transfer and phase change.

真空冷却过程是复杂的相变传热传质过程，该过程涉及到扩散、传热、传质和相变等机理。

youdao