在传播中

A general Godunov finite difference schemes-WENO (Weighted Essentially Non-Oscillatory) schemes which have fifth-order accuracy is used to perform a numerical calculation for 2-dimensional axis symmetrical laser-supported plasma flow field under laser ablated solid target.

采用具有五阶精度的WENO差分格式和简易等离子体状态方程模型对激光与等离子体相互作用的复杂物理过程进行了数值计算，分析了激光束能量在等离子体区中的吸收、屏蔽效应等动态耦合规律以及激光支持等离子体前驱冲击波传播。

In many research methods, the numerical model is one of most ways to solve the wave transformation.

在诸多研究方法中，波浪数学模型成为解决大范围波浪传播变形的主要手段之一。

Based on the EMI coupling paths model of the off-line PWM switched mode power supply, sensitivity analysis of the component parameters in the model can be conducted and the key component parameters will be found. This method can be used in the EMC debugging and the EMI forecasting of power electronics equipment.

在本文对离线式PWM开关电源电磁干扰传播通道所建模型基础上，可以实现对模型中各元件参数灵敏度的分析，找到关键影响参数，为开关电源电磁兼容调试和电磁干扰预测提供有效的指导。

To analyze the feature of dam-break flow in natural channel bends,channel-fitted orthogonal curvilinear coordinate system is established and two-dimensional shallow water equations are derived in this system through coordinate transformation,simplification and depth integration.

为分析溃坝波在天然弯曲河道中传播的特点，建立了跟踪河道走向的正交曲线坐标系，并通过坐标变换、简化和水深积分推导出了曲线坐标系下的二维浅水方程。

Through S-wave polarization scanning mode of ultrasonic impulse testing, rock samples with three different properties are measured to evaluate the variation of S-wave velocity in three perpendicular coordinates. By analyzing S-wave splitting of three directions and polarization of the maximum or minimum speed S-wave amplitudes, we think that the velocity orthotropy and fracture orientation observed in the grain sandstones and crack marble samples can be estimated in terms of the polarization and velocity of S-wave. Also, perpendicularity characteristics on the two types of rocks can attribute to the bedding and structure of rocks (directional grains or crystallize).

在实验室通过选择了三种不同岩性的岩石，采用超声脉冲测试方法中的横波偏振扫描方式，观测了岩石样品三个坐标方向上的横波速度变化，通过分析三个传播方向上出现横波分裂的差异，以及出现最大或最小快慢横波振幅的偏振方向发现，可从横波偏振方向和速度值判断出纹理砂岩和裂隙大理岩样品存在不同程度的速度正交各向异性和裂隙方向等特征，认为这两种岩石的正交特性的原因是岩石的层理或裂隙与岩石本身的结构构成的。

On the basis of experiment, the influence of wall roughness on fire transmission and overpressure in gas explosion was investigated.

在试验的基础上，研究了瓦斯爆炸过程中壁面粗糙度对火焰传播速度和超压的影响。

The recent development of XML technology is another important break through after the deployment of the page description language technology, like postscript or PDF.

在此崭新世纪的开端，以网际网路科技与资讯交换为主轴的新经济模式必将溶入印刷传播的流程中，而其关键的技术之一就在于XML技术的导入。

Therefore palynology has a good prospect for practical application in forensic medicine.

因此孢粉学在法医学实践应用中具有良好的应用前景：此文通过阐述孢粉学的概况、分类、形态特征及传播的规律。

The multicast operation is a very commonly used operation in parallel application programs.

多点传播在平行的应用程式中是常用的运算。

Broadcast can particularize the audience from the aspect of the collective audience, their need and the accepting time. Competed with the other medias, if the broadcast want to succeed, it cannot only rely on the single broadcasting way, and it has to depend on TV, newspaper and the Internet.

在其他媒体的市场挤压中，广播要"突出重围"，仅靠其自身那种单一的传播方式是不够的，还必须广泛借助电视、报纸、互联网等媒体平台，实现广播的跨时空延伸。

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。