dead milled 对生胶过度塑炼，或对混炼胶过度轧炼，致使胶料的强力降低的现象谓之过炼。 过炼不仅会降低硫化胶的强度，也会产生部分胶料交联性的凝胶，有损产品质量。
耶和华的言语，是纯净的言语。如同银子在泥炉中炼过七次。
6and the words of the Lord are flawless, like silver refined in a furnace of clay, purified seven times.
象忘掉炼过黄金的火焰。
耶和华的言语，是纯净的言语。如同银子在泥炉中炼过七次。
The words of the LORD are pure words: as silver tried in a furnace of earth, purified seven times.
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