下梁

In chapter 4, dynamic behaviors of a cantilever beam in a non-inertial reference frame are investigated, and the differences of the dynamic property between the zero-order model and the proposed coupling model are revealed.

第四章研究了非惯性系下柔性梁的动力学性态。

Using piecewise linearity system theory,the harmonic excitation nonlinear response of clearance restriction cantilever beam system was researched.

运用分段线性系统分析理论，研究间隙约束的悬臂梁振动系统在简谐激励下系统稳态响应的动力学行为。

Based on a model of a cantilever beam system with clearance restriction ,its nonlinear dynamic response to harmonic excitation are studied qualitatively in experiments.

在实验中，以受间隙约束的悬臂梁系统为模型，对该系统在简谐激励下存在的各种非线性动态响应状态进行了定性的研究，并利用Matlab软件对实验数据进行处理，绘制出相图。

In this paper , an efficient optimality criterion method is developed for the mini-mum weight design of WF I-section frames with constraints on stresses, displacements, local buckling and cross-sectional dimensions.

本文利用优化准则法解刚架结构优化设计问题，可以处理工程上常用的宽缘工字梁型剖面结构在应力、位移、板局部稳定性和几何约束条件下的最小重量设计。

After four weeks a lot of osteoid and a moderate amount of new bone formed, which was in thin piece-like.

镜下所见，第2周，植入骨块的骨细胞部分死亡，骨小梁周围出现较多的成骨细胞。

Some effective measures were presented to solve bigger prestress loss of mid span in overlong frame and it is suggested that prestressed reinforcement with curve linetype should be adopted ...

在次梁与板中为有效利用无粘结预应力筋，建议在板厚许可的情况下尽量采用曲线形预应力筋。

Upstream incision of rivers led to westward motion of boundary between internally and externally drained regions and disappearance of paleo-lakes in Quaternary, and Quaternary incision of external rivers gradually formed present topography characterized by deep valleys, high mountains and remained peneplain in eastern Tibetan Plateau.

中新世晚期-第四纪以湖面与五道梁群湖相沉积顶面为基准，在高海拔环境下继续发生剥蚀夷平和准平原化，逐步形成主夷平面或高原面。第四纪河流溯源侵蚀导致内外流水系分界线自东向西迁移，在青藏高原东部形成高山峡谷地貌。

The stress distribution of section in wide and thin box girder subjected to simultaneous bending and axial forces doesn't conform to the assumption of the plane section, and the transverse stress distribution is uneven; with the increasing of bridges' span and the lowering of security repertory, to consider the uneven of stress distribution in calculation of design and construction control, and to analyses the shear lag effect in the process of bridges' construction and using are bound to have important engineering value and theorical significances.

在压弯荷载共同作用下，宽而薄箱梁的截面应力分布并不符合平截面假定，沿横向分布不均匀；随桥梁跨度的加大和安全储备的降低，在设计计算和施工控制计算中考虑这种不均匀性，准确分析其在施工和使用阶段的剪力滞问题具有重要的工程价值和理论意义。

The scattering wave velocity potential to the flexible circle pile was the solution of the Laplace equation, which satisfied the cylindrical surface non-homogeneous boundary condition.

采用动力Winkler弹性地基梁模型模拟桩土动力的相互作用，通过求解满足柱面非齐次边界条件的Laplace方程，直接构造波浪对柔性桩的散射速度势，考虑了流体和桩体的相互作用，由解析法给出了埋置圆桩在波浪荷载下的动力响应。

The principle variation of beam deflection is calculated with two variable parameters: the initial speed and the acceleration of moving mass, using the solution method of time-variant mechanical system.

利用时变力学系统的求解方法，得到在移动质量的初速度和加速度两个运动参数变化情况下，梁的挠度变化规律。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！