查询词典 vibration-proof

The characteristic, difference and relation of the normal and inverse design are compared detailedly. The formula of the first and second class eigen sensitivity are given. For the horizotal vibration system of building structure, the sensitivity method and perturbation method are adopted to modify the dynamic characteristics. The inverse eigenvalue problem of Jacobi matrix and the positive, symmetry, band matrix are studied. The method of Evolutionany Computation is first used in the inverse design of building structure, the principal problems are studied. The features of aseismatic inverse design of building are analysed.

本文较详细地比较了正、逆设计的特点；给出了特征值和特征向量的一阶和二阶灵敏度分析公式；对于建筑结构水平振动系统，提出了结构动态特征的修改方法；对Jacobi矩阵及实对称带状矩阵的逆特征值问题进行了分析研究，首次将其引入建筑结构抗震逆设计中；首次将进化计算方法应用于建筑结构抗震逆设计中，对主要问题作了探讨；对建筑结构抗震逆设计的特点进行了分析，提出未来的发展方向和前景。

To improve productivity and cutting accuracy of wood and to modify characteristics of band saw, it is essential that we study vibration characteristics of band saw.

为了提高木材生产率和加工精度，改善带锯机的工作性能，降低生产成本，对带锯机的振动特性进行研究是十分必要的。

It is effective to study the effect to the vibration of antiaircraft gun, by gun vehicle moving and bump、barbette traversing and cradle pitching、gun house recoil、Bourdon force、the mass center diviation and inertial imbalance of inbore projectiles, etc.

可以模拟在射击过程中，火炮自动机的运动、自行高炮的行驶与颠簸、炮塔回转与摇架起落运动、炮箱后坐、复进运动、Bourdon力、被发射弹丸的质量偏心、不端正嵌入、动不平衡等等各种因素的激励作用对高炮总体系统振动的影响。

The numerical examples of linear and nonlinear vibration demonstrate that barycentric Lagrange interpolation collocation method have advantages of simple formulations, easier to program and higher computational accuracy.

线性和非线性振动问题的数值算例表明，重心Lagrange插值配点法具有公式简单、数值实施方便和计算精度高的优点。

The linear vibration problems under periodic exciting force and general exciting force are numerical analysis by barycentric Lagrange interpolation collocation method.

利用重心Lagrange插值配点法分析了周期激励和一般激励下线性振动问题。

Vibration is the most common natural phenomena, it is a basic form of the movement of objects.

实验介绍振动是自然界中最常见的物理现象，它是物体运动的一种基本形式。

The main reason and the basic solution of this motion vibration and noise during the production process were introduced in detail in this paper.

详细介绍了在生产过程中引起永磁直流电动机振动和噪声的主要原因及解决的基本方法。

A wind instrument ,such as a bassoon,clarinet,flute,oboe,or saxophone,in which sound is produced by the vibration of reeds in or by the passing of air across the mouthpiece.

木管乐器一种管乐器，如低音管、单簧管、笛子、双簧管或萨克斯管，这些乐器的声音靠簧的振动或通过吹口的空气流通而产生

The results of tests and research indicate that we must attach importance to blasting seismic rules and effects on different buildings in order to make basting techniques bring much economic benefits and reduce harm of blasting vibration as much as possible.

现场测定与研究表明：必须重视地铁隧道爆破地震规律及其对各种建筑物和构筑物影响的研究，才能充分发挥爆破技术的经济效益和最大限度地降低爆破振动的危害。

The damper is suitable oil the occasion of needing displacement compensation,vibration damping and not affected by environmental temperature,such as auto transport and bateau bridges between twin buildings.

适用于汽车运输，建筑双子楼连廊等需要位移补偿和隔振缓冲的场合，且不受环境温度影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。