查询词典 diffraction

Boussinesq type equations, can be used to simulate the nonlinear transformation of surface waves due to the effects of shoaling, refraction, diffraction, reflection and nonlinear action so on.

Bousinesq方程能够用于模拟表面重力波传播过程中的折射、绕射、反射以及浅化，非线性作用等现象。

In this study, a finite element method is used to develop a numerical model for the simulation of combined wave refraction, diffraction, reflection, shoaling and breaking in the nearshore zone.

中文摘要本计画拟利用有限元素方法，建立近岸波场模式，模拟波浪以大角度入射近岸地区时，波浪因地形、人工结构影响产生之折射、绕射、反射、浅化及碎波等波浪之变形。

The parabolic equation can treat large angle incident waves and includes the wave energy loss with Bretchneider—Reid formula which has been verified by lots of indoor and field data, Its numerical model can simulate wave shoaling、refraction、small angle diffraction and bottom friction, and can be aplied to study the wave filed from open sea to shore area.

在抛物型缓坡方程波浪数学模型的建立过程中，采用适用于较大角度传播的基本方程，同时这一模型引入建立在较多实验和实测资料基础上的Bretchnei-der—Reid公式，较好地考虑了底摩损耗问题。该模型可同时考虑波浪的浅水变形、折射和小角度绕射，适用于大范围波浪场的推算。

After introducing the Boussinesq terms, which makes Boussinesq equation applied in the middle water depth and mild slope, and the wave energy loss term, the numerical modal of Boussinesq equation can accurately simulate irregular wave shoaling、refraction—diffraction and reflect in deep and shallower water.

在Boussinesq方程波浪数学模型的建立过程中，采用适用于中等水深（h／〓≤0.5）和缓变地形的Boussinesq项的修正形式，同时在基本方程中增加了波能损耗项，使该模型能够较精确地模拟波浪的浅水变形、折射、绕射、反射及其综合影响。

The X-ray diffraction data show that, the corrosion product is mainly composed of sulfates of zinc.

因此，在该地区进行材料的腐蚀研究具有重要的现实意义。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon-nitrided carbon steel and of the sulfurized one were examined by means of X-ray photoelectron spectroscopy and X-ray diffraction.

采用MPX-200型摩擦磨损试验机考察了碳氮共渗及室温电解硫化处理后的20#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon nitrided carbon steel and of the sulfurized one were examined by means of X ray photoelectron spectroscopy and X ray diffraction.

采用MPX-200型摩擦摩损试验机考察了碳氮共渗及室温电解硫化处理后20^#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

After preparing PC-HA and β-TCP by wet chemical precipitation method separately , granular type bone grafts were collected by filtrating, freeze drying, tableting, sintering, mixing, and size screening. All the bone graft specimens were analyzed with scanning electric microscope, Fourier transform infrared spectrometer and X-ray diffraction.

本实验室以湿式化学沈淀法分别反应生成PC-HA与β-TCP后，经过滤、混合、乾燥、压锭、烧结、粉碎后以不同网目筛网控制颗粒大小，备制磷酸钙骨移植材(PC-HA/β-TCP)，藉由扫描式电子显微镜、傅氏红外光谱仪与X光绕射分析仪进行材料之物化性分析。

The tensile properties of under-aged 3J21 alloy at room and low temperatures were studied on a universal tensile teat machine. Moreover, a metallographic microscope and X-ray diffractometer were used to analyze the metallographic structure and physical phase of the alloy in a cold rolled and under-aged state. By employing a transmission electron microscope the structure of the alloy under the above-cited two states was observed and the X-ray diffraction results being verified.

在万能拉伸机上对欠时效态3J21合金室温及低温条件下的拉伸性能进行研究，并采用金相显微镜、X射线衍射仪对冷轧状态和欠时效态的金相组织及物相进行分析，采用TEM观察两种状态的组织和结构，验证了X射线衍射结果。

This research is to use conductive fiber to be an electromagnetic-wave absorption screen layer. This theory of electromagnetic-wave absorption is based on the knitted structure, which enables the electromagnetic-wave interference, diffraction and reflection on the screen layer effective.

本研究主要利用导电损失的导电性纤维，制作为平纹针织结构作为电磁波吸收体之护幕层，此部份的电磁波吸收原理是利用针织物特殊之材料结构性质使护幕表面达到有效之电磁波干涉、绕射、多重反射之衰减。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"