...字： 冷冻干燥技术;纳米W粉;两段还原法; Ce[gap=1796]Key words: freeze-drying technology; W nanopowder; two-stage reduction; Ce...
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两阶段还原法 two-phase reduction method
两段还原法
Two-stage reduction method
以上为机器翻译结果，长、整句建议使用 人工翻译 。
一些厂已采用两段铬酸盐还原法。
Two-stage chromate reduction has been used at several plants.
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