支承

The dead center, being a stationary bearing point, must be lubricated.

由于是固定的支承点，死顶尖必须润滑。

Both motor car and each trailer of HST were modeled as a multi-rigid-body system with two suspensions, and LVT was modeled as an assembly of track segment elements with 24 degrees of freedom. The vertical vibration matrix equation of the system was established on the basis of the principle of the total potential energy with stationary value in elastic system dynamics and the rule of "set-in-right-position" for formulating system matrixes, and then Wilson-θ numerical integration method was used to solve the problem. The dynamic responses of the system were calculated when the train runs at the speed of 200 km/h. And the effects of vertical stiffness of rail fastener and block pad on vertical vibration responses of the system were investigated.

其原理是：将高速列车的动车和拖车模拟为具有二系悬挂的多刚体系统；将弹性支承块式无碴轨道模拟为具有24个自由度的轨段单元的集合；基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立此系统竖向振动矩阵方程，并采用Wilson-θ数值积分法求解，计算速度为200 km/h时此系统竖向动力响应，研究轨道刚度对此系统竖向振动响应的影响规律。

According to structural characteristics of floating slab tracks, a track segment element was taken between two adjacent fasteners. For each element, rails were regarded as Euler beams supported by discrete viscoelastic supports. The fasteners and rubber supports were replaced by a linear spring and damp. So the vibration model of the floating slab track was established. In constructing vibration model of a metro train, each car of the metro train with two suspensions was modeled as a multi-rigid body system, in which rigid bodies were connected with each other by a linear spring and damp. Combining the potential energy of vertical vibration of the track with that of the metro train, the total potential energy of vertical vibration of the train and track was obtained. And then, the matrix equation of vertical vibration of the system was established using the principle of total potential energy with stationary value in elastic system dynamics and the "set-in-right-position" rule for formulating system matrices. The vibration responses of the system can be obtained by solving the matrix equation with the direct time integration such as Wilson-θ method.

摘 要：针对浮置板式轨道结构特点，取相邻2个扣件之间的轨道为1个轨段单元，钢轨视为连续弹性点支承Euler梁，浮置板视为弹性薄板，扣件系统及橡胶支座均模拟为线性弹簧及粘滞阻尼器，建立浮置板式轨道振动模型；将城轨列车中的车辆均离散为多刚体系统，各刚体之间通过线性弹簧及粘滞阻尼器相连，建立列车振动模型；将浮置板式轨道及列车振动势能叠加，得到系统竖向振动总势能；基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立此系统竖向振动矩阵方程；采用Wilson-θ逐步积分法求解此矩阵方程，得出此系统竖向振动响应。

"Stoa: In Greek architecture, a freestanding colonnade or covered walkway; also, a long open building with its roof supported by one or more rows of columns parallel to its rear wall."

柱廊：古希腊建筑中，指单独建立的列柱廊或有顶盖的走廊，也指开敞的长条形建筑，其屋顶由平行于后墙的一列或几列柱子支承。

Cooperating with academies chronically, the company offers users of hot rolled steel strip kinds of rollers like lots of alloy steel, alloy semi-steel, eccentric duplex of high nickel chrome molybdenum, hot strop roughing and support roll; offers lots of bainite eccentric duplex roll to high speed stick and wire rolling mill.

公司长期与科研单位合作，为热轧钢带连轧用户提供大批合金钢、合金半钢、高镍铬钼离心复合、热带粗轧及支承辊等各类轧辊，为高速棒、线材轧机提供大批贝氏体离心复合轧辊。

First, it is discussed about the relation between the dynamic stiffness submatrix of the supports system with variable stiffness and damping and the optimum output-feedback matrix when the rotor-supports system is governed by the optimum control laws.

本章进一步研究转子—轴承系统变刚度阻尼支承振动主动控制问题，提出了在最优振动主动控制规律的有效频率范围以外，对转子—轴承系统进行次优振动主动控制的策略思想。

In addition, a sump may be provided to allow effective lubrication and cooling for bearings that support the shaft.

另外，可设置储油槽，以便对支承轴的轴承进行有效的润滑和冷却。

Since the deflections of the seven plates mentioned above satisfy the differential equation of plates, we can simply superpose the corresponding quantities and make them satisfy all the boundary conditions and supporting conditions.

2上述的七种板的挠度满足板的微分方程，因而只要把它们迭加，以满足边界及支承点的条件，即得其解。

The shifting drive bearing is a new spe-cial type bearing with supporting function as well as speed change function.

变速传动轴承是一种新型的既具有支承功能又具有变速功能的新型特种轴承。

The bending problem of plates on elastic foundation with local point supporting under the classical boundary conditions was discussed.

研究了任意载荷作用下含局部支承弹性地基板在典型边界条件下的弯曲问题。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。