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The different distribution of initial acoustic pressure was given.

分析比较了超宽带微波与单一频率微波入射下,初始声压分布的不同。

In order to solve the deflection of elasto-plastic beam, we brought about and explained the theory of equivalent elastic beam.

为求解弹塑性变形梁的压下挠度问题提出并阐述了等效弹性梁理论。

The biaxial compressive tests of concrete under constant lateral stress are carried out.

6进行了混凝土在不同侧应力和加载速率下的双轴压试验。

Rolling pressure and rolling torque are important technical parameters in rolling course. They play an important role in establishing depression regulation, analysis of load in working procedure, checkage of equipments intensity and so on.

轧制压力和轧制力矩是轧制过程中重要的工艺参数,在制定压下规程、工序负荷分析、设备强度校核等方面都具有重要作用。

She found it hard to choke down her anger.

她感到难以压下心中的怒火。

Joint behavior of beam and column is the key of entire structure.This paper uses finite elemnt analyzing software ANSYS to analyze the bearing mechanics of joint under monotonic load and periodic load,and gets load-displacement curves,viscosity curves and frame curves.The paper mainly analyzes how axis-push ratio,gradation of concrete,plate layout and steel type to affect tensibility performance and viscosity feature of joint.The results indicate that concrete-filled squar tube column has good tensibility performance and dissipative ability.

梁柱节点的性能是影响结构整体性能的关键,而目前对方钢管混凝土柱—钢梁节点抗震性能的研究工作尚不完善,本文通过有限元软件ANSYS来分析方钢管混凝土柱—钢梁节点,研究节点区在单调荷载和低周反复荷载作用下的受力机理,得节点区的荷载位移曲线、滞回曲线及骨架线;着重分析方钢管混凝土柱的轴压比、混凝土等级,隔板形式和钢材型号在低周反复荷载作用下对节点延性和耗能等抗震性能指标的影响。

With 54# half-refined paraffin as raw material,the technology of the second injecting steam of ethane cracking is used for reference in the paraffin cracking process which avoides the coke produced in cracking furnace.

采用优质的54#半精炼石蜡,将乙烯裂解二次注汽技术融合在石蜡裂解技术中,避免了裂解炉结焦;考察了单程裂解、炉前甩残蜡循环裂解、炉后甩残蜡循环裂解在相同的工艺条件下的产品质量、产品收率及存在的问题;验证了新的炉后甩残蜡循环裂解是较好的工艺路线,在较高的水蜡比15%,高温600℃、低烃分压和短停留时间(2s左右)条件下,能生产出高质量的α-烯烃产品(总烯烃质量分数在97%以上,α-烯烃含量为88%)。

A detailed calculation results verified the moment and deflection of lapped connection beam is similar as that of continuous beam. So the continuous beam analytic model is suitable for analyzing roof purlins. However, how to guarantee the stability of the bearing compressed zone without the tension bar in bottom flange greatly affect the use of continuous purlins in project, theoretical analysis is carried out.

对搭接模型和均匀连续梁模型的计算结果进行对比,证明采用均匀连续梁的分析模型可较为准确地描述连续搭接檩条的内力状况;而对于仅在檩条上翼缘附近设置拉条,竖向力作用下如何保证支座区受压下翼缘的稳定性在很大程度上影响着连续檩条在工程中的推广应用,因此对其进行了理论分析。

The land between the lakes looked the same: on one side, Little Lee, frosty surface glittering in sunlight within a frame of golden reeds, streaked by long blue shadows from snow-laden trees.

河中间的那片土地看起来还是老样子,河的这一边,金黄色的芦苇的表面结上了霜,在阳光的照射下闪耀着,被厚厚的积雪压着的树投下了长长的影子。

The outside sealing component -corrugated tube of valve can affect outside sealing properties of valve. Through finite element analyse of stress state of corrugated tube, the stress status which are under stretch, compress and stretch-compress action are obtained. Combined with test, the stability, detonation pressure and rigidity of corrugated tube are analyzed. The result showed that corrugated tube is safety under working pressure and when stretch-compress displacement is less than 60% of maxmium displacement.

作为阀门外密封元件的波纹管是影响阀门外密封性能的关键部件,通过对波纹管进行有限元分析,初步掌握了波纹管在拉伸、压缩以及拉伸压缩共同作用下的应力状况,同时采用有限元计算和试验相结合的方法,分析了波纹管的稳定性、爆破压力、刚度等,结果表明,波纹管在工作压力下,拉伸和压缩量达到许用位移的60%时,波纹管工作仍是安全的,为阀门开启量的确定提供了理论依据。

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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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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