查询词典 span

Firstly, the development and basic theory of CFST arch bridge are introduced briefly. Considering the fact of the Yellow River Bridge, the construction schemes of hanging segmentally by long span and great tonnage cable crane, fixing by inclined cable, once pouring to the arch top symmetrically along the whole rib, are adapted.

简要介绍了钢管混凝土拱桥的发展和基本理论，针对兰州雁盐黄河大桥的实际情况制定了采用大跨、大吨位缆索吊机分段吊装，斜拉扣挂固定，整条拱肋对称一次压注到顶的总体施工方案。

Add the lubricant on the surface to make self-lubricating better so as to prolong the life-span.

表面加入润滑剂，使自润滑性更好，寿命更长。

Among the exceptions are certain stem cells that do not senesce throughout an individual's life span.

其中例外的是某些干细胞不senesce整个个人的寿命。

It was a steel bridge of a single span and there was a sentry box at each end.

那是一座单孔铁桥，两端各有一个岗亭。

Thou hast run thy course; thou hast closed the span that Fortune allotted thee; thou hast reached the goal of all; thou hast left behind thee the woes and weariness of the world; and thy enemy has himself granted thee sepulture accordant with thy deserts.

你已经走完了你的路程，已经尽了命运指派给你的任务，你已经到了每个人迟早都要来到的终点。你已经解脱了尘世的劳役和苦恼，你的仇敌把你葬在一个跟你身分相称的金杯里。

In association with the improvement design practices on winding equipment for main cable of large span cable bridges liking Shantou Gulf Bridge, Xiling Yangtse River Bridge and Xiamen Haicang Bridge, some contents are systematically described on the basis of electric control system of ZLC series winding machine for main cable, including mechanism composition of the winding machine for main cable, mathematical relationship between rotation speed of winding system and travel speed of the winding machine, work principle of accurately matching control on the two speeds with PLC and frequency converter, wireless measurement and monitor of winding system tension, automatic override control on cable clamp as well as practical effect of a real bridge application.

结合对汕头海湾大桥、西陵长江大桥和厦门海沧大桥等大跨度悬索桥的主缆缠丝施工设备－主缆缠丝机的改进设计实践，以ZLC系列主缆缠丝机的电气控制系统为基础，系统介绍了主缆缠丝机的机构组成、缠丝系统旋转速度与缠丝机行走速度之间的数学关系、采用PLC及变频器对两速度进行精确匹配控制的工作原理、缠丝系统张力的无线测量、监控、索夹的自动跨越控制以及实桥的应用效果。

Based on the generalized potential energy variational principle of nonlinear elasticity theory with large deflection,the incomplete generalized potential energy functional is established on the space coupling free vibration of three-span self-anchored suspension bridge by considering the effect of coupling of flexural and axial action,and shearing strain energy of stifening girder.

摘 要：基于大位移非线性弹性理论的广义变分厚理，考虑了加劲梁的压弯耦合和剪切应变能的影响，建立了三跨自锚式悬索桥空间耦合自由振动的大位移不完全广义势能泛函，通过约束变分导出了自锚式悬索桥的竖向挠曲振动、横向挠曲振动和纵向振动的基础微分方程，忽略非线性项的影响，进而得到线性振动微分方程。

Based on the generalized potential energy variational principal of nonlinear elasticity theory with large deflection, the incomplete generalized potential energy functional with large deflection is established on the space coupling free vibration of three-span self-anchored suspension bridge by considering the effect of axial compressive and shearing strain energy of stiffening girder.

摘 要：摘要：基于大位移非线性弹性理论的广义变分原理，考虑了加劲梁轴向压缩应变能和剪切应变能的影响，建立了三跨自锚式悬索桥空间耦合自由振动的大位移不完全广义势能泛函，通过约束变分导出了自锚式悬索桥的竖向挠曲振动、横向挠曲振动、纵向振动及扭转振动的基础微分方程，为自锚式悬索桥的固有振动性状分析提供可靠的理论依据。

These are big showy flowers that bloom over a decent span of time.

这些都是大艳丽的花朵盛开在一段时间体面的跨度。

People with sickle cell anemia also typically have a shortened life span.

人与镰状细胞性贫血也通常是缩短寿命。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。