查询词典 propagation of errors

Based on optical beam deflection,a fiber-optic diagnostic system is proposed to investigate the propagation of a laser-induced plasma shock wave and the oscillation of a cavitation bubble .

实验得到了激光等离子体冲击波传播规律和空泡的动力学特性。

This paper discusses the mechanism of the propagation of elastic surface wave,presented a method that use the tip of atomic force microscopy and beam deflexion method to on line detect the nanometer vibration of the particle in the surface wave.

本文探讨了表面弹性波传播的机制，提出了一种利用原子力显微镜微探针与光束偏转法检测纳米振动的新方法，并利用这种方法对表面波质点的纳米振动进行了实时检测。

In this peper it is revealde that the treeing characteristics can be improved re-markably by degasification and then by SF_6-impregnation The experimental results show that the caus-es for initiation and propagation of electriecal tree are not only the effect of the energetic charge carri-ers but also the effect of oxygen in low density polyethylene.

作者采用了真空脱气后充六氟化硫(SF_6)气体的技术处理材料试样，能有效改进低密度聚乙烯的电树枝特性，把树枝起始电压和树枝起始时间提高到一个新的水平。

The research results can provide some bask information on the morphology, biology, manual domestication, propagation and protection of demoiselle cranes.

通过本文的研究，为蓑羽鹤的形态学、生物学、人工驯养、繁殖与保护提供一些基础资料。

To research the propagation characteristics of travelling wave along transmission line in depth, the authors establish a mathematical model of travelling wave along lossless transmission line with the format of discrete time and space mesh lines, derive the stable condition and boundary condition of the wave equations using numerical solution of partial differential equation, and attempt the simplification of the boundary condition to realize full decoupling of voltage and current.

为深入研究行波在配电线路上的传播特性，建立了时间-空间网格线离散格式的无损传输线行波数学模型，采用偏微分方程的数值解法推导了波动方程的稳定条件和边界条件，并尝试对边界条件进行简化，以实现电压和电流的完全解耦。

First of all, as the forests disappeared, the propagation decreased, while some kinds of plants and animals were even close to deracination or had already died out. Next, the natural disasters, such as flood, drought, and tornado, etc. broke out more frequently and strongly. Again, without the protection by forests, soil erosion and fertility decline together with other problems appeared. Finally, forest vicissitude also had negative effect to social economy and people's lives.

首先是由于森林面积的减少，导致一些森林动植物的数量减少，濒临灭绝，甚至消失；其次，森林的变迁导致海南岛水灾、旱灾和风灾等自然灾害发生次数增加，强度加大；再次，土地失去森林的保护而引发严重的水土流失和土壤肥力下降等种种问题；最后，森林的变迁还对社会经济及人们的生活产生不利的影响。

Doerner(1962)derived an equation for propagation of NPS through an imaging system that is in common use today.

Doerner(1962)通过今天在共同的用途的想象系统获得了一个等式为NPS的传播。

In allusion to the defect of grads descension of traditional back propagation network algorithms, some improving measures such as adaptive learning and additive momentum has been taken, and better application result is acquired.

针对基于梯度下降法的BP网络存在的学习效率低、收敛速度慢、易陷于局部极小状态、网络的泛化及适应能力较差等缺陷，采用了附加动量法及自适应学习率、合理选择激励函数等策略对算法中的缺陷给出了改进措施，取得了较好的应用效果。

With solving the determinantal equation, SAW propagation properties in AlN/GaN structures are acquired, including the phase velocity and electromechanical coupling coefficient which is vary with frequency, film thickness and c-axis orientation.

通过求解该行列式方程，分析了声表面波在AlN/GaN结构中的传播特性，包括声表面波相速和机电耦合系数随频率、AlN的膜厚和c轴取向的变化规律。

With solving the determinantal equation, SAW propagation properties in AIN/GaN structures are acquired, including the phase velocity and electromechanical coupling coefficient which is vary with frequency, film thickness and c-axis orientation.

通过求解该行列式方程，分析了声表面波在AIN／GaN结构中的传播特性，包括声表面波相速和机电耦合系数随频率、AIN的膜厚和C轴取向的变化规律。

This matter overthrew all basises I learned from Sunday school .

这件事把我从周日学校学到的所有道理都颠覆了。

It's one of the cruel ironies of aging: if you want to remember your favorite restaurants, the less you should eat at them.

这是一个老化的残酷讽刺：如果你想记住你最喜欢的餐馆，你应该更少吃到它们。