In addition, the metal body within welding heat effect zone will produce a lot of micro-cracks because of infiltration of solid solution nitrogen in course of porcelain spraying.
此外，喷瓷管道焊接热影响区的金属基体将由于喷瓷过程中渗入的固溶氮而产生大量微裂纹。
The addition of re in aluminium lowers the silicon content in the solid solution, which is responsible, mainly, for the increase in conductivity of the aluminium conductor.
铝中加入稀土，可降低铝固溶体中硅的含量，这是提高铝导电率的主要原因。
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