查询词典 double-helical

You use the double negative -""What's the double negative ?

你还用双重否定来表示否定——"，什么叫'双重否定'？"

In this dissertation, certain problem relating to dynamic property and seismic response behavior of one certain cable-stayed bridge are studied with ANsYs, with 141+345+141m span, double tower and double cable plane.

利用大型有限元程序Ansys，对跨度组合为141+345+141m的双塔双索面混凝土斜拉桥进行动力特性和地震反应的分析。

The 3D motions of plane double enveloping worm has been emulated with Solidege and Flash.The model of fuzzy optimization design of plane double enveloping worm has been built by fuzzy theory and the methods of mechanical design.

应用solidege三维实体造型软件，进行平面二次包络环面蜗杆传动的运动状态的动态仿真，模拟了平面二次包络环面蜗杆传动的运动状态，再现了蜗杆啮合的运动状态的仿真。

Article Content: double - exposure speckle displacement fields of signal processing chip Zhao Zhijun with a small helium-neon laser beam irradiation objects plane displacement took double exposure amnesty patches that can be received in the following strong form of Young's fringes This chart reflects the bulk film was irradiated point ...

文章内容：位移场双曝光散斑片的信号处理赵志军用细氦氖激光束照射物体面内位移双曝光赦斑片上任一点，在其后可以接收到扬氏条纹强形，此图反映了散片被照点所。。。

Insein Bridge in Myanmar undertaken by the Company is a double tower, double cable plane, and three-span steel truss cable-stayed bridge with the full length of 581m .

公司具有承接各种大型钢桁架桥的制造、施工能力，所承建的最长的钢桁架桥为双向双车道，全桥总长1200米；承建的缅甸英申大桥全长581米，为双塔双索面三跨钢桁斜拉桥；承建的桥面最宽的桥梁为缅甸的玛哈邦多拉大桥，为双向六车道的双塔双索面斜拉桥；承建的钢桁悬索桥最大跨径500米，双向双车道。

On the condition of "many-head" and "small drive ratio",the plane double enveloping hourglass worm can not settle the problem of undercutting and sharpening simultaneously.It has devoted to a new type hourglass worm_sphere double enveloping hourglass worm.

考虑到平面二次包络环面蜗杆传动在多头小传动比条件下根切与齿顶变尖的矛盾很难同时解决且啮合性能较差，介绍了一种新型环面蜗杆传动——球面二次包络环面蜗杆传动。

On the generation principles of the special double point of coupler curve,the paper analyzed double point of the coupler curve.

从连杆曲线特殊二重点的产生机理出发，研究具有实二重点轨迹特征的连杆点位置。

Per annum in line through the China Certification Committee for packaging quality system certification and product certification "double certification", product quality authoritative department recognized domestic counterparts are the first through the "double certification" of the enterprise.

公司于200年率行通过中国包装认证委员会质量体系认证和产品认证"双认证"，产品质量得到权威部门的认可，是国内同行中最早通过"双认证"的企业。

Main Product "Double Rabbit" brand of rice for green food,"Double Rabbit" series of rice through the National Product 2005-2008 annual National exempt.

主要产品"双兔"牌大米为绿色食品，"双兔"系列大米通过国家2005-2008年度全国免检产品。

Plenty of samples is provided for training BP neural network by traditional design method and the topology structure is built using forward propagating data and backward propagating error data, which is applied to optimal design of parallel double broken line pulley in order to accomplish the mapping between main parameter of hoisting mechanism of gantry crane and the related parameters of parallel double broken line pulley.

利用传统的设计方法为BP神经网络的学习提供足够样本集，然后通过正向传播和误差反向传播建立BP神经网络的拓扑结构，并将其应用于平行双折线卷筒的智能设计中，以完成龙门起重机起升机构主要设计参数与平行双折线卷筒相关参数的映射，提高设计的质量和效率，为龙门起重机关键零部件的智能设计提供一个新的途径。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失