BARACK OBAMA: "This compromise guarantees more than two trillion dollars in deficit reduction." It's an important first step to ensuring that as a nation, we live within our means.
Scandia and rhenium doped tungsten powders were prepared by solid-liquid doping combined with two-stepreduction 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。
3
The two-step process involving gas oxidation of phenol to benzoquinone with complex metal ions catalysts and reduction of benzoquinone to hydroquinone with iron powder was studied.