静力学

The following is the main works of the paper.1 The weight and the center of weight of the whole hull, analysis by statics the weight of steel, the equipment, oil, water, crew and cargoes etc., conclude a method of calculating the weight and the center of weight of the whole hull,2 Work out the series of formula of distributing the water pressure of wave to the corresponding nodes on the plate, conclude a method of calculating the flotage and the center of the flotage,3 Analysis the method of adjusting the equilibrium of the hull, the finite element module of the hull, and the character of the linetype, by ship statics principle, work out a series of formula of adjusting longitudinal slant, preliminarily confirm the parameter and the range,4 Program in FORTRAN, and link into ANSYS, for auto-loading when analyzing the whole hull by the FEA,5 Make the finite element module of a real hull, calculate the weight and the center of the weight, the flotage and the center of the flotage, compare the result of manual calculation with the computed result, analysis the deviation of the program.

3通过分析船舶常用浮态调整方法、船体结构有限元模型和船体线型特征，运用船舶静力学原理，推导船舶浮态纵倾调整公式，分析了基于船舶结构有限元模型的纵倾浮态调整方法和初步探讨了纵倾浮态调整中的参数确定方法以及初步确定这些参数的取值范围。 4用本文推导的计算方法和公式开发FORTRAN程序，并编译连接到有限元软件ANSYS中，用于进行整船结构有限元分析时自动加载计算。

When analyze the forced vibration of drill string ,it is taken into consideration that the friction between drill string and wellbore impact on the vibration of the drill string.So static analysis of the drill string is included in this paper.

由于本文在分析钻柱的强迫振动时，考虑了钻柱与井壁摩擦阻力对钻柱的振动的影响，所以对钻柱的静力学也进行了分析。

Based on the construction features of the Upper Beam of Large Open-die Forging Hydraulic Press,a finite element model has been established by using large-scale finite element analysis software I-DEAS,and the structural stress and displacement of the upper beam under all sorts of loads have been analyzed.

根据某大型自由锻造油压机上横梁的结构特点，利用大型通用有限元分析软件I-DEAS建立有限元模型，并对上横梁进行了静力学的有限元分析计算，研究了在满负荷工作状态下上横梁的结构应力以及位移情况。

Assuming the initial background is an isothermal and hydrostatic equilibrium atmosphere in which the horizontal pressure gradients are balanced by the geostrophic winds, we study the nonlinear propagation characteristics of the gravity waves, analyze the influence of the earth's rotation on the propagation of gravity wave and compare the simulation results with that obtained by the linear gravity theory.

假设初始背景是满足流体静力学平衡和地转平衡的等温大气，我们研究了重力波的传播特性，分析了地球旋转效应对重力波传播的影响，将模拟结果与线性重力波理论给出的结果及实验观测结果进行了比较。

In this thesis, the structures of gravity dam and earth-retaining wall are analyzed based on elastostatics Boundary Element Method.

本文基于弹性静力学边界元理论，进行了重力坝和挡土墙的结构分析，并编制了相应的边界元FORTRAN程序，其中包括相应问题的输入数据前处理子程序。

Firstly, We have derived the reasonable dissociation limits for the O_2 molecularbased on the general principle of Atomic and Molecular Reaction and the grouptheoretical derivation of molecular electronic states.

首先，在原子分子反应静力学基础上，根据分子电子状态构造群论原理确定出了O_2分子基态X~3Σ_g~-和激发态b~1Σ_g~+合理的离解极限。

The model is usually an inhomogeneous system of linear equations. It is pointed out that the general solution of the homogeneous system of linear equations can satisfy the request of making the wires tight, and the special solution of the inhomogeneous system of linear equations are not smaller than zero, so their sum is greater than a given mumble.

由于多自由度绳牵引并联机构的静力学模型一般是一个非齐次线性方程组，本文指出可让对应齐次方程组的通解的最小值满足绳保持张紧的条件；让非齐次线性方程组的特解非负，而避免利用对应齐次线性方程组的通解保证非齐次线性方程组的解不小于给定的最小值。

Buoyant force is not only the base of hydrostatics which has many applications, but also the key point of physics teaching in the middle school.

"浮力"是流体静力学中应用性较强的基础知识之一，也是初中物理教学的重要内容。

And the specification and trend of antiwear hydraulic fluids are presented according to the hydrostatics application.

简要介绍基本的液力系统，并从液力静力学应用角度对液压油规格和抗磨液压油发展趋势进行阐述。

Hydraulics is a branch of mechanics science. The base rules of hydraulics include hydrostatics and hydrodynamics.

水力学所研究的基本规律包括水静力学和水动力学两大部分。

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％。