单词：coal anthracite
单词：coal anthracite 相关文章
According to the latest data from the General Administration of Customs (GAC), China's net import(净出口) of coal hit 103.43 million tons in 2009. Last year, China exported 22.40 million tons of coal, down 50.7 percent year on year, while its coal
英语新闻
DAVID GREENE, HOST: And, you know, the debate over coal can really seem like a battle between bitter enemies. You have environmentalists who want to replace coal with cleaner fuels and coal boosters who want to revive the industry. But there really i
2017年NPR美国国家公共电台5月
298. The Steam Locomotive. 298．蒸汽机车 Steam was used to drive boats through the water. 人们用蒸汽在水上驱动船， Why should not steam be used to haul wagons over a railroad? 为什么不可以用蒸汽在路轨上拉动马车？ Th
美国学生历史
By Mil Arcega Washington 04 December 2007 A decommissioned coal mine in the Rocky Mountain state of Wyoming is about to get a new lease on life. Although it no longer produces enough coal to generate electricity, the company that owns the land has fo
VOA常速英语2007年（十二月）
BEIJING, Feb. 25 (Xinhua) -- China's safety watchdog said Monday it will no longer approve new coal mines that do not meet production capacity requirements in 2013 in order to ensure work safety. High-gas coal mines with an annual production of less
英语新闻
中国富煤缺油少气的能源资源特点，造成能源消费主要依赖于煤炭，石油则主要依靠进口，而且带来一系列环境问题。煤清洁转化技术则可以帮助缓解这一难题。近日专家表示，我国将在2020年
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