木头、钉子和其它外来杂物都嵌在了甘草之中。
Wood, nails and other foreign materials were imbedded in the licorice.
还研究了防止和减少外来夹杂物的措施。
The measures for preventing and decreasing external inclusions in steel are also discussed.
介绍了夹杂物的来源，包括内生夹杂和外来夹杂，着重于二次氧化产物、卷渣、内衬侵蚀。
The paper introduce the impurities origination including internal and external impurities, and pays more attention to re-oxide, rolling slag and inner-lining erosion.
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