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Work out their content by unit absorptivity.
再利用单位吸光系数换算其含量。
youdao
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So it is necessary to determine the laser absorptivity of ductile iron.
因此，确定球墨铸铁材料对激光的吸收率十分必要。
youdao
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So it is necessary to determine the laser absorptivity of ductile iron.
因此，确定球墨铸铁材料对激光的吸收率十分必要。
youdao