The direct synthesis method has the merits of requiring no calcining shorter producing period and lower costs.

直接法的优点在于产品不必经过焙烧，生产周期短，成本低等。

youdao

The direct synthesis method has the merits of requiring no calcining shorter producing period and lower costs.

直接法的优点在于产品不必经过焙烧，生产周期短，成本低等。

youdao