two-step reduction in aqueous solution 二步液相还原
two step reduction method 两步还原法
two-step smelting reduction 二步熔融还原
two step photoinduced reduction 两步光化学还原
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Scandia and rhenium doped tungsten powders were prepared by solid-liquid doping combined with two-step reduction method.
用液-固掺杂及两段还原法制备了氧化钪及铼掺杂的钨粉。
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