... 充填剂，加重剂 filling matter 加重物质，加重剂 weighting substances 填充剂，加重剂 filling agent ...
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加重物质
Aggravating substances
以上为机器翻译结果，长、整句建议使用 人工翻译 。
其目的是为了将岩心的变化降到最低，通常用泥浆或水基、油基泥浆钻取岩心，但是使用少量的化学添加剂和加重物质。
Since the purpose is to minimize alteration, a fresh core has often been drilled with a bland mud, either water - or oil-base, but with a minimum of chemical additives and weighting material.
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