单词:electroslag smelting casting
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Business 商业 Gold Mining in Africa: Golden handcuffs 非洲金矿开采:金手铐 Tanzania's firebrand leader takes on its largest foreign investor. 坦桑尼亚反对派领导人接手其最大的国外投资商。 If they accept that they stol
Oil Refining An important new industry, oil refining, grew after the Civil war. Crude oil, or petroleum - a dark, thick ooze from the earth - had been known for hundreds of years, but little use had ever been made of it. In the 1850's Samuel M. Kier,
ARI SHAPIRO, HOST: One of the ingredients a successful Broadway show needs is a talented cast. That starts with talented casting directors, the people who can see a Tony-winning star in the making, say, when a performer walks into an audition as a co
KELLY MCEVERS, HOST: The next story started when a director and producer from a tiny theater in Portland, Ore., posted a message on Facebook. He was outraged that the estate of Edward Albee wouldn't grant him rights to produce Who's Afraid Of Virgini
There are more than 26 thousands casting companies in China, accounting for half of all the global manufacturers of casting products. But the traditional method of handmaking castings is heavily reliant on human resources and energy, and can produce
BEIJING, Sept. 21 (Xinhua) -- An innovative stage in the production of the latest iPhone models might help all its suppliers, especially those in China, to cut carbon emissions and improve efficiency, according to an Apple executive on Monday. The bi