Yuav ua li cas yog vim li cas rau qhov paug ntawm lub cub tawg chamber ntawm lub lub tshuab nqus tsev vacuum?

1. Cov dej xau: Qhov no yog ib qho tseem ceeb ntawm cov khoom siv ua paug.

2. Diffusion twj tso kua mis thiab txhua yam twj tso kua mis twj tso kua mis roj rov qab mus rau qhov cub.

3. Cov khoom siv lossis cov khoom siv tsis raug ntxuav kom huv.

4. Tsawg melting point hlau yog coj mus rau hauv lub lub tshuab nqus tsev vacuum. Lead, txhuas, zinc, thiab lwm yam yog tag nrho cov pa phem.

5. Kev ua qias tuaj ib puag ncig hauv kev kho cua sov Rhiav.