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镁及镁合金是所有金属结构材料中最轻的,其密度只有1.74/cm~3,是铝的2/3,比钢轻78.1%。
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Of all metal construction are wing structures of modern high-speed airplanes.
现代 高速 飞机的机翼全是金属结构的.
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- area of construction建筑面积;
- all year round全年,一年到头;
- all year整整一年
- at all times总是,一直;随时;每时每刻;平生;
- architectural construction建筑构造;
- at all costs不惜任何代价;不惜工本;
- all works of life各行各业
- at alladv.根本;简直;毫;
- all your swans are geese.st.你的一切期望都成了泡影。;
- and all that诸如此类的;
- antiseismic construction抗震结构;
- alternate bay construction隔仓施工法;
- all wood construction所有的木材建筑
- at all timeadv.总是;
- as is known to all人所共知;众所周知;
- at all events不管发生什么事,在任何情况下,无论如何;
- at all risksadv.无论如何;
- all welded steel structure全焊接钢结构;
- aseismatic construction抗震措施;
- all weather全天候的;
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- secret adj.秘密的,保密的;隐秘的;神秘的;外人不得而知的;(指行为与习惯)暗中进行的,未公开的,诡秘n.秘密;机密;诀窍;奥秘;秘诀;诀窍;奥妙
- every det.每个;每;所有可能的;充足的;
- yell v.叫喊,吼叫;n.喊叫;呐喊,欢呼;
- conference n.专题讨论会;正式商谈;体育协会;
- suppl [医]供给,输送,电源;
- incorrect adj.错误的;不正确的;不能接受的;(说话或举止)不合规矩的;
- stripe n.条纹;种类;军士军阶;犯人穿的横条囚衣;
- distance n.距离;遥远,久远;疏远;远方;冷淡;adj.远程的;
- array n.阵列;数组;大量;大堆;大群vt.排列;部署兵力;打扮,装饰;
- upstairs adv.在楼上,往楼上;在高空;n.楼上;
- straighten vt.& vi.变直,把…弄直;整理,整顿;使…改正;使…好转;vi.变好起来;
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