共查询到20条相似文献,搜索用时 171 毫秒
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在中国,参与森林植被和湿地保护和恢复的个人或机构可以从政府那里获得报酬。这一做法,标志着中国已成为全球环保领域的创新者。
森林趋势组织最近发表了《2012年流域服务支付状况》报告。效力于亚洲发展银行和中国农业政策研究中心的驻京环境经济学家迈克尔·贝内特是该报告的参与者之一。他认为,这份报告在一定程度上展现出中国政府在水处理问题上的“两面性”。在以精细化,低成本的手段保护水资源方面,中国的确走在了世界的前列。可是还有一个重要事实,那就是中国也正面临着越来越严峻的水资源短缺问题,这也使水域保护问题受到了前所未有的关注,并且还将吸引大量的投资。 相似文献
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《中国铸造》2008,5(2):F0002-F0002
"You", was a vessel to contain wine at the Chinese Bronze Age.
Both the cover and the belly of this "You" were decorated with patterns of snakes and frogs. The bronze vessels decorated with the similar patterns, displaying the strong regional features, were mostly excavated from the water-villages in the Yangtze River Basin of China. 相似文献
Both the cover and the belly of this "You" were decorated with patterns of snakes and frogs. The bronze vessels decorated with the similar patterns, displaying the strong regional features, were mostly excavated from the water-villages in the Yangtze River Basin of China. 相似文献
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中伏的晴天.太阳格外的毒,当我们坐在开着。空调的办公室时,有一些人却每天都在与高温为伴.在灼热中与钢铁相互较量.他们就是锻造工人。 相似文献
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本文在分析焊接作业中火灾、爆炸事故原因基础上,依据实践经验总结出控制焊接作业危险因素的“十不焊”,事故可减少90%以上。最后阐述了焊接作业中火灾、爆炸和触电事故的预防措施。 相似文献
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《中国铸造》2014,(5):467-471
On August 8 to 10, 2014, the final evaluation stage of the 16th "FOSECO Cup" for excellent foundry papers (2013), organized by the Foundry Institution of Chinese Mechanical Engineering Society (FICMES), was carried out in Zhangjiajie city, Hunan province of China. As usual, the entries were those papers published in various journals including Foundry, China Foundry (English), Special Casting & Nonferrous Alloys, Modem Cast Iron, Foundry Technology, Foundry Equipment & Technology, China Foundry Machinery & Technology and Foundry Engineering, as well as those published in the proceedings of academic congress organized by FICMES, each of the technical committees of FICMES, or all the provincial or municipal foundry societies in the year of 2013. 相似文献
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近日,总投资达1亿多元的金川集团公司白烟灰综合利用工程,在镍盐厂正式建成并开始单体试车.此项目的建成,为金川集团公司发展循环经济、延伸产品链,实现"百年金川,千亿企业"的宏伟发展目标写下了浓墨重彩的一笔. 相似文献
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This paper described the work of welding process design for the " West-East" pipeline project, which is high pressure, large diameter and heavy wall thickness. According to the different geographical situation, climate, culture and the flexibility of the welding methods, this work recommended the semi-automatic process at the east and middle sections and automatic process at the west section of the pipeline project. The manual process is recommended on the tie-in joints and repairs. The double joint pipe and the 3 joint pipe are recommended at the water net place and some in-ditch welding place to reduce the welding volume. Also the special redesigned bevels are recommended for the automatic process and the semiautomatic process. Through all destructive tests, the results shows the welds are meet the requirements of related standards, specifications and design documents. 相似文献
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8月22~24日,第四届全国职工职业技能大赛“熔盛杯”焊工决赛在南通举行,来自全国30个省(自治区)、直辖市和新疆生产建设兵团的31个代表队94名焊接高手参加激烈角逐,在此次比赛中湖北省代表队荣获团体第五名。 相似文献
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JIAXian LINGXiaomei 《稀有金属(英文版)》2004,23(1):37-37
SiC whiskers with "rosary bead" morphology were synthesized using suitable silicon source and carbon source through solid reaction at the temperature above 1537 K. The diameter and length of the SiC whiskers were about 0.1-1.0 μm and 20-100 μm, respectively. The largest diameter of their enlarged ends of the whiskers was about 0.2-1.0μm, and it gradually and smoothly decreased to the size of the plain part of the whiskers. The results of X-ray diffraction analysis show that the crystalline structure of the obtained SiC whiskers is β-SiC. It is considered that the SiC whiskers grow via a vapor-solid mechanism. 相似文献
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《中国铸造》2008,5(4):310-310
Shenzhen Mould Manufacture Factory invested by the international mould magnate Finland Perlos Corporation has been formally put into production. The factory was built completely in accordance with the Euramerican standards. At the first phase, the total amount of investment was RMB 60 million yuan. The high-end mould products produced by the factory mainly supply for such industries as telecommunication, 相似文献
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各位领导。各位朋友们:
大家下午好!
在这秋意盎然的美好季节,我们相聚在光大国际会展中心,借中国焊接博览会这一行业盛会举行“焊研科技杯第三届中国焊接摄影大赛”颁奖仪式。在此,我谨代表焊研科技全体员工,向大赛的成功举办,向各位获奖者表示热烈的祝贺!向为大赛付出辛勤努力的各有关方面表示衷心的感谢! 相似文献
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《中国铸造》2008,5(1):67-67
Sand core engineering for metal casting has taken another technological leap forward with the release of version 7.0 of the Arena-flow computer-aided engineering (CAE) software for core making and tooling design. Available from Ashland Casting Solutions, a business group of Ashland Performance Materials, a division of Ashland Inc. (NYSE: ASH), the software includes a new solver that delivers improved performance as well as experimental data agreement. 相似文献