查询词典 vibration-proof

The process of sand absorption is:(1) the vibration head vibrates and losses the sand layer, and supply high pressure air into the sand absorption head;(2) the high pressure air generates negative pressure in the sand absorption pipe when it is discharged out from the sand absorption;(3) the sand absorption head and the vibration are shifted downwards and maintains the water flow straightly.

取砂土的过程为：(1)振动头振动松散砂土层，同时向吸砂头供入高压空气；(2)高压空气通过吸砂头从排砂管向上排出的过程中，在吸砂管内产生负压，吸砂管将管口处的水和砂土吸入到吸砂头内，在高压气流作用下，吸砂头内的砂、水和气混合而成的三相流通过排砂管排出到受砂船上；(3)在吸砂的过程中，适时地将吸砂头和振动头下移并保持钻孔套管中的水流畅通。

One radial vibration probe positioned in " Y " plane for each rotor after impeller. For vibration display, alarm and shutdown, function wired to control panel.

每级叶轮后的转子轴处都装有一径向振动探头，线接至控制柜，为每级振动的显示、报警和停机。

However, it hardly has the effect for the rigid-body translational vibration. There is the best effect of damping and energy absorption for distortion vibration.

在40-100 Hz范围内有较好的减振、吸能作用；对于整体平移振动不起作用，而对于扭曲振动效果最好。

The vibration velocity and sound radiation power curves of submerged cylindrical shell, has strong resonant characteristics. It can be described by resonance radiation formulas, which include superposition of inherence vibration modes, by using resonance radiation theory .

本文为验证共振辐射理论，对无限长和有限长圆柱壳体，首先计算了复共振频率并分析其固有振动特性，然后结合共振辐射理论讨论壳体振动和声辐射中各振动模式的贡献及其作用特性。

The thought of suppressing the vibration of structure with multi-part composite structure is put forward for the first time, the motion and control equation is derived, and the effect of vibration-reduction and its influential parameters are studied.

提出了利用多单体组合来抑制结构振动响应的思路，推导了其运动和控制方程，并对其减振效果和影响参数进行了研究。

In vibration analysis, the vibration of 16 Hz to 31.5 Hz is larger than other bandwidths.

在振动频谱分折上，以振动频率16Hz~31.5Hz的加速度较大，主要的原因来自於曳引机的引擎所造成。

Secondly, to analyze seismic response of the concrete gravity dam, subspace iterative method was applied to compute free vibration period of the dam, time integration method was builtup for the seismic time history analysis and formulation of coupled vibration of reservoir water and dam were also deduced.

其次，针对混凝土重力坝的地震响应分析问题，采用子空间迭代法计算了大坝的自振周期，建立了地震时程分析的逐步积分方法，并且推导了库水和坝体耦合振动的理论公式。

With the appearance of a free span pipeline, its loading types and stress state will be changed. Especially when ocean currents pass through it, a periodical vortex shedding is often produced and induces vibration of the free span pipeline. This type of vibration contributes a lot to the fatigue failure of a free span pipeline.

管跨段的出现改变了海底管线所承受的载荷形式和应力状态，尤其是在海流作用下流经管跨时，常伴随着周期性的涡旋发放，引发管跨段的周期性振动，成为管跨段发生疲劳失效的主要因素之一。

It is stated, on basis of analysis on the blasting theories at home and abroad, that parameters, such as vibration velocity and vibration time should be introduced to analyze the influence of blasting on the surrounding structures. In the paper, the influence imposed by the blasting excavation of tunnels with extralarge crosssections is simulated, with Guanziling tunnel on LanzhouChongqing railway as an example.

在分析国内外爆破振动理论的基础上阐述要根据具体的工况，有针对性地引入振动速度、振动时间等多种参数进行分析，且以兰渝线关子岭特大断面隧道爆破为依托，应用数值分析方法，模拟特大断面隧道爆破振动对周边建筑物的影响。

The experimental results show that this method can realize the measurement of micro-vibration, and the micro-vibration displacements measuring range can be up to 5～775 nm.

实验结果表明，该方法能实现微振动信号的测量，对微振动位移的测量范围可以达到5～775 nm。

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％。