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Second order incident boundary condition on fixed incident boundary is derived for numerical simulations, based on the cnoidal or sinusoidal motions of wave maker paddle, which shows that the prediction with second order incident boundary condition is more accurate than the prediction with first order incident boundary condition. 2 The analytical solution for higher-order Boussinesq equations is derived and its applicable range is discussed. 3 A 2-D fully non-linear numerical model using boundary element method is developed to obtain wave forces acting on rectangular obstacle. 4 The three-dimensional fully non-linear waves are studied in a numerical wave tank using finite element method.The studies on the coupled numerical model combined Boussinesq equations with Laplace equation are following.

非耦合非线性波浪计算模型：1 根据造波板做椭圆余弦运动或正弦运动速度，推导出数值模拟波浪水槽时固定入射边界上的二阶波浪入射边界条件，数值计算结果和实验结果的对比表明采用二阶入射边界条件对波面升高的预报比采用一阶入射边界条件对波面升高的预报更为精确；2 推导了波浪水槽造波板做正弦运动所产生波浪的高阶Boussinesq方程摄动展开解析解，讨论了该解析解的适用范围；3 对整个波浪水槽应用边界元方法数值模拟了波浪对物体的非线性作用；4 用有限元法求解三维Laplace方程模拟了三维完全非线性波浪水槽。

For the first time, in [3] the authors discussed the inequalities of B-B and by using them the authors give a proof of the existence and uniqueness of the generalized solution for magnetostatic field problem with zero boundary value. By using the inequalities of B--H in, in[-5,6] the authors give a proof of the existence and uniqueness of the generalized solutions for 3-D magnetostatic field Neumann problem and 2-D magnetic field first boundary value initial problem.

前人已讨论了B—H间的几个基本不式，并由之证明了三维静磁场带零边值问题广义解的存在与唯一性，作者也曾利用给出的B—H间的不式证明了三维静磁场Neumann问题和二维时变场第一边值初值问题广义解的存在与唯一性。

Increasing the roughness of fishway, using another lower opening in the spillway of the check dam to get more flow in fishway, using upside down trapezoidal cross section steel bar to substitute circular cross section can improve the functions of the fishway.

提出鱼道内增加粗糙度、利用防砂坝开口低槽增加鱼道内水量、建议改用倒梯形断面钢棒取代圆形断面，并配合结论说明鱼道设计上之缺失与建议修正方法。

The existence of the first solution is obtained by using a nonlinear alternative of Leray-Schauder, and the second one is found by using a Krasnoselskii fixed point theorem in cones.

第一个正解的存在性是通过运用非线性Leray-Schauder抉择定理得到的，第二个解是通过Krasnoselskii锥不动点定理得到的。

According to the horizontal precision of detail point, it analyzes the horizontal precision of the detail point when using flat, and the horizontal precision of the detail point when using the total station and computer.

从碎部点的平面精度出发，分析了平板测图时碎部点和数字测图时碎部点的平面精度，根据误差传播定律，结合测绘的实际情况，从而推导出两点法已知边推未知边的边长比精度。

3Tested ability of springs made in Japan and China by using this system. The ability of spring made in China accorded with using need. But it is necessary to ameliorate its rigidity and flexility.

3通过研制的力学性能测试系统测试了日本离合弹簧和国产离合弹簧的性能，通过比较分析，国产弹簧基本达到了使用的要求，但其刚度和柔性还需进一步改善。

Flicker-Free Drawing Using Bounds Accumu - To avoid annoying screen flicker while drawing with GDI or GDI+, using an off-screen bitmap buffer is a well-known technique.

在用GDI或者GDI+绘图时，为了避免令人讨厌的屏幕闪烁而使用off-screen位图缓冲器是一种有名的方法。

NOTE: If you are already using microfiber towels, look carefully at your paint finish under flourescent light when you are using your towels.

如果您已经开始使用市面上的超纤布的话，请您在使用这些超纤布时同时在萤光灯下仔细的检查您的漆面。

Regular porosity in about 38 nanometer size was observed using atomic force microscopy. Excitation and Emission spectrum were obtained by using F-4500 fluorometer.

用F-4500型荧光分光光度计测量其三维荧光谱，与未经氧化的铝片作对比，发现前者的激发谱在280 nm~340 nm有一个较宽的谱带，并且在253.8 nm附近有一个肩峰，发射谱有一个以417.4 nm为峰值的较宽谱带，而后者却无任何明显的发射峰和激发峰。

The equations of motion for vehicle-bridge whole system are formed using conventional finite element method, and they are solved using Wilson-θ method.

按照有限元方法，形成汽车与桥梁相互作用的整体系统方程，并采用Wilson-θ法求解。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。