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。
The method and the step of reduction of river water, well water, reservoir water and interbasin water diversion are explained, The examination measures of reduction result rationality is put forward.
文中详细地阐述了取河水、井水、水库水、跨流域引（排）水等不同情况进行还原的具体方法步骤，并对水量还原成果提出合理性检查措施。
The reduction step of catalyst with butene-2 and reoxidation step of reduced catalyst with oxygen were investigated by the pulse method.
用脉冲法研究了催化剂用丁烯- 2还原及还原催化剂用氧再氧化步骤。
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