天是灰的吗？
晚霞红如火，晓色青如灰，定是明亮天。
我怅望灰天，在泪光里，幻出母亲的面影。
文章通过对具有代表性的二灰砂砾不同龄期的力学性能试验分析研究，提出了用7天强度和7-180天强度增长率作为二灰砂砾力学性能的评价指标。
Through representative lime-flysch gravel mechanics capability test and analysis, put forward 7days antipress intension and 7-180 days intension rising rate and make them as lime-flysch gravel index.
每年狂欢节的时间都根据圣灰星期三来定，即四旬斋的第一天。
The dates of the carnival vary year depending on the date of Ash Wednesday, the first day of Lent.
傍晚天红早晨灰。
该智利火山已连续六天喷发气体和火山灰。
And this volcano in Chile is pouring out gas and ash for a sixth straight day.
新郎说：“下个星期天，你必须来我这儿。”我已经邀请了客人。我会一路洒灰，到时穿过树林你就能找到路。
"The bridegroom said," Next Sunday you must come out to me. I have already invited guests. I will make a trail of ashes, so that you can find your way through the woods.
灰霾天的空气污染物浓度高于非灰霾天。
The concentration of pollutants of haze was higher than non-haze days.
一只完全发育的灰熊，一天可以吃掉50磅的食物。
一天下午，有些孩子正在那茅屋的近旁玩耍，他们忽然看见一个身穿灰袍的高个子女人走进了屋门；
Near this latter spot, one afternoon, some children were at play, when they beheld a tall woman, in a gray robe, approach the cottage-door.
四月中旬，欧洲领空大多关闭了六天。这是出于对冰岛的火山灰可能导致飞机失事的担心。
Much of Europe's airspace was closed for six days in mid-April over fears that ash from an Icelandic volcano would cause aircraft to crash.
而粉煤灰掺量对二灰钢渣土的后期抗压强度起主导作用，石灰掺量为9%、粉煤灰掺量为50%、钢渣掺量为30%的配合比90天抗压强度最高。
When the lime content is about 9%, the fly ash content about 50% and the steelmaking slag content about 30% in the mixture, this formula has the highest 90-day compression strength.
聚丙烯纤维加固二灰碎石的28天及60天的最大温缩系数均小于素二灰碎石的温缩系数。
The max temperature shrinkage coefficient 28 days and 60 days is smaller than common lime-fly ash aggregate.
矿渣微粉的增强效应及其子效应都对矿渣水泥28天强度贡献最大，并以火山灰效应为主，约占总效应的80%。
The enhancement effect and its sub-effect of superfine slag powder contribute most on slag cement's 28th strengths, in which the pozzolanic effect is the main factor and is amount to 80%.
有消息称，持续了6天的火山灰事件重创了欧洲的租车公司，造成的损失达6500万欧元。
Car rental firms in Europe are counting the cost of the recent volcanic ash disruption as news emerges that the sector lost Euro 65 million over the six-day crisis.
试验结果表明活化改性后的粉煤灰28天抗压强度较原灰提高15％，为其今后在优质粉煤灰混凝土中的应用提供了数据。
The experimental results reveal that, the 28d strength of the activated fly ash is higher of 15% than that of original fly ash, which will greatly improve the prospect of uses of fly ash.
试验结果表明活化改性后的粉煤灰28天抗压强度较原灰提高15％，为其今后在优质粉煤灰混凝土中的应用提供了数据。
The experimental results reveal that, the 28d strength of the activated fly ash is higher of 15% than that of original fly ash, which will greatly improve the prospect of uses of fly ash.
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