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裴庆美 《语文世界(高中版)》2015,(Z1):19
当别人都沉浸在盼年的焦渴中时,我对年却有那么一点点抵触。因为只要一过年,母亲的手就一天天的泡在水里,经风一吹,母亲的手上就布满了一道道冻裂的口子,时不时有鲜红的血流出来。一进腊月门,母亲就开始不停地拆,不停地洗。有几日,母亲天天端着一大盆被套衣物,去我家前面的池塘。气温低的时候,池塘的水面往往结着一层薄冰,母亲需用棒槌敲开薄冰,在一片冰凌的包围中,搓洗一盆盆的衣物被褥。母亲的手一入水马上就变红了,经过长时间的濯洗,母亲 相似文献
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正北京时间2014年8月6日17时06分,已经飞行了10年之久的欧洲空间局"罗赛塔"号彗星探测器,进入了环绕"楚留莫夫-格拉希门克"彗星(以下简称"楚-格"彗星)的轨道,成为人类历史上第一枚环绕彗星运行的探测器,"罗赛塔"在"推特"上甚至跃升热门话题榜首位。耗资10亿欧元的"罗赛塔"为什么这么火爆?因为它有可能帮助我们回答老祖先们一直在念叨的一个基本问题:"我们从哪里来?"所以各位就不妨花点儿时间和我一道,看看为什么你现在能坐在这里阅读这篇文章吧。 相似文献
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Uniaxial compression experiments on horizontal and vertical samples of first-year freshwater ice in a res- ervoir were conducted at different temperatures and strain rates with an electronic universal machine equipped with low temperature cabinet. The results show that there is no difference between the strengths of two horizontal samples with grain sizes ranging from 1 to 4,mm and 4 to 14,mm, while the strength of the 1-4 mm vertical samples is 1.4 times higher than that of the 4-14 mm vertical samples because of the change of crystal structure. For different loading directions, the strengths of the horizontal samples do not differ from those of the vertical samples with the same grain sizes. The relation among the uniaxial compressive strength, strain rate and temperature was established through data analysis in both the ductile and brittle regions. 相似文献
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