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The mathematical model of the hyperboloid twist drill was introduced.
介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.
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The authors showthe hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.
单叶双曲面和双曲抛物面是直线曲面.
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北京首都机场T3航站楼屋顶为大跨度双曲面钢网架结构,吊顶采用半开放的金属条形板.
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The cutting edge the drill is the intersection the hyperboloid and the spiral rake face.
该钻型主刃是双曲面与螺旋前刀面的交线,此交线与钻头端剖面形成的交点是主刃上的点.
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The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.
作者证实:单叶双曲面和双曲抛物面是直线曲面.
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- fortnight n.两星期,十四天;
- waiting n. 等候;(宫廷中的)侍奉;侍女;侍奉期间;adj. 等待的;(尤指因迟到)让人等候;服侍的;(用于告诉某人立刻行动)你还在等什么呢;
- U.S.A n.美国(United States of America);
- gross sales 销售总额;销售(货)总额;销货毛额
- represent v.代表;象征;维护…的利益;相当于;描绘;正式提出;
- whose pron.谁的;其;
- body--building 身体-建筑
- subjective adj.主观的;个人的;内省的;
- big bear 大熊;大熊湖;大熊山;大熊星座;大熊市
- a host of adj.许多;很多;一大群;
- hunter n.猎人;猎犬;猎狐马,猎食其他动物的野兽;亨特;
- zebra n.斑马adj.有斑马般斑纹的;有条纹的

