在那些含铅玻璃料似乎必不可少的情形下，建议至少在03锥级下烧制釉料，以确保铅与釉料中的成分反应充分。
In those cases where leaded frits seem necessary, it is recommended to fire to at least cone 03, to ensure sufficient reaction of lead and glaze ingredients.
在那些含铅玻璃料似乎必不可少的情形下，建议至少在03锥级下烧制釉料，以确保铅与釉料中的成分反应充分。
In those cases where leaded frits seem necessary, it is recommended to fire to at least cone 03, to ensure sufficient reaction of lead and glaze ingredients.
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