单词:cement for dam
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Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h
By Ben Gilbert Baghdad 11 January 2006 An Iraqi mason works on a wall surrounding a new school on the outskirts of Basra (file picture) Iraq has been hit with a construction boom - in no small part du
EXPLORATIONS - Hoover Dam By Paul Thompson Broadcast: Wednesday, July 28, 2004 (MUSIC) VOICE ONE: This is Bob Doughty. VOICE TWO: Hoover Dam. And this is Steve Ember with EXPLORATIONS in VOA Special E
JINAN, Aug. 2 (Xinhua) -- Typhoon Damrey made landfall in east China's Jiangsu province on Thursday night, bringing gales and rains to Jiangsu and its neighbouring Shandong province. Damrey, the tenth typhoon of the year, came ashore near the Chenjia
Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele
NANCHANG, Feb. 13 (Xinhua) -- Although he is still homesick from time to time, 61-year-old Lei Yangqing admits that life has never been better for himself and his fellow villagers, who moved years ago to make way for the construction of the Three Gor