| 摘要 |
<p>Crystals of low melting point materials, especially those with large difference between melting point and crystallisation point, such as gallium, are grown from seed crystal held in rotating, vertically reciprocating holder in vacuum chamber above crucible containing melt. A cooler for the crystal is built into the crystal holder and pref. uses compressed air flowing through nozzle plates and ducts towards crystal.</p> |
