查询词典 beam

In China, there is no research in the field previously. This thesis supported by the Ministry Advanced Research Foundation of China, make a basic study of the instrument. Its achievements read as follows:(1) A new analytic method based on the concept of an equivalent volume force presented in this thesis, which solve the problem of piezoelectric beam, is simple, clear and reliable. By means of it, the design parameters for QRS have been calculated and analyzed serially, i. e., optimum electrode configurations are chosen, the side ratio of beam is determined, and the formula of electrode location efficiency is derived.

在我国这方面的研究尚属空白，本文在兵器部预研基金项目的支持下，对这种器件进行了基础性研究，从而填补了国内空白，具体包括如下内容：(1)提出了等效体力概念，以此为基础建立了一种分析压电振梁问题的新方法——等效体力分析法，该方法物理图象清晰、计算简明、结果可靠，它可以对QRS的设计参数进行系统的理论分析。

The operation of SAP2000 is simple , The result of calculation is more exact than other finite element software. So the result of model is exact. Moreover, In the middle of the system of balcony with side beam ,side beam and shoulder beams a crossed.

同时，SAP2000与其他有限元软件相比，建模简单，易于上手，所以采用SAP2000分析软件进行本论文的研究，是一种更为有效、简单、实用的结构研究、设计分析软件，用它进行结构分析是值得信耐的。

This was due to the heat effect of welding to connect the side plates and the beam flanges, which caused brittle tear of beam flanges in the heat effect zone outside of reinforced part.

主要原因是侧板与梁翼缘的对接焊缝的影响使得加强区外焊接热影响区母材变脆而发生脆性撕裂。

In the design and improvement section, took the three methods as follow: changed the section form of the beam, amended the fixing method of both side of the beam and design the dynamic vibration absorber according to the vibration theory to raise the working speed of the computerized embroidery machine.

改进设计部分，根据振动理论和建立有限元模型时的一些结论，通过改变横梁截面形状，修改横梁两端的固定方式，设计动力吸振器三个方面来实现减振，以达到提高电脑刺绣机工作转速的目的。

Basically, a composite concrete deck consists of a concrete top slab, flanked on each side by concrete main beam s, and a concrete middle beam .

组合混凝土梁的基本构成是顶部为混凝土平面，两侧为混凝土主梁，中间为混凝土中梁。

In chapter three, the passive vibration control of a smart cantilever beam with piezoelectric shunt damping system is studied theoretically. In this chapter, the mechanical impedance of piezoelectric shunt damping system is analyzed, and the parameters of the RLC piezoelectric shunt circuit are optimized via transfer function of the piezoelectric shunt damped beam in order to optimize the vibration damping effect.

第三章。研究了利用压电分流阻尼系统进行压电智能悬臂梁被动振动控制的方法，分析了压电分流阻尼系统的机械阻抗，并通过传递函数方法对RLC串联压电分流谐振电路元件的参数进行了优化，以使压电分流阻尼系统的阻尼效果达到最优。

Steel-concrete composite beam is a kind of flexural member composed by concrete slab and steel beam via shear connectors.

钢-混凝土组合梁是指钢梁和混凝土板通过剪力连接件连接形成整体共同工作的受弯构件。

The accumulated self-exciting dose for Na-24 is only 1.12 mGy during its average life-time for irradiation of total thermal neutron fluence of 3.6E12 nth/cm^2. Conclusions: Because of the self-exciting dose reduced from neutron activation can be neglected for gamma dose measurement in neutron and gamma mixed field, and the threshold of linear response is 2 Gy, the FWT-70-40 dosimeter not only can be used for high dose rate Co-60 irradiation field and the high energy electron beam for medical purpose, but also can be used for gamma dose measurement in an epithermal neutron beam for boron neutron capture therapy.

型号FWT-70-4OM）剂量计於BNCT高中子通量与剂量的中子、加马混合辐射场所产生的自激剂量，对加马剂量度量干扰可忽略，且对加马的最低剂量限值为2Gy，因此除可应用於钴60加马高剂量辐射场与放射治疗用高能量、高剂量电子射束的剂量度量外，亦可应用於BNCT照射治疗用高能量、高剂量的中子、加马混合辐射场的加马剂量度量。

Overlapped increment scanning in electron beam lithography and the calculation methods for the exposure doses and the etching depth and sensitivity are presented for the structural characteristics of three-dimensional patterns as well as the self-devised pattern generator of an e-beam lithography system.

针对三维曝光图形的结构特点，结合自行设计的图形发生器，提出了电子束重复增量扫描方式及曝光剂量与刻蚀深度关系和灵敏度的计算方法。

Because the scale Gaussian beam description is not accurately satisfies Maxwell equation, it is not suitable for the study of interaction between the beam and small spherical particle.

由于标量高斯光束模不是麦克斯韦方程的准确解，因而不能用于研究粒子与聚焦光束相互作用问题。

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。