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- The dynamic equations of the photorefractive two wave mixing (TWM), which accout on the beam fanning effect, are derived and solved by numerical method. 以多个两波耦合(TWM)相位栅模型建立了考虑光扇开效应后的动态两波耦合方程。
- Prospecting metal mine goafs by Rayleigh wave method is introduced. 介绍用瑞雷波法检测金属矿山采空区。
- Minimum Detective Height and Height Measurement Accuracy Use Diffraction Wave Method to Detect a Crack Height. 衍射波法测定裂纹高度时的最小可测高度和高度测试精度。
- Two wave systems travelling in different directions are superposed and the wave height distribution of the resulting system is discussed. 正>从海上的实际观测资料看来,单纯的风浪或涌和混合浪(卽风浪和涌或不同来源的海浪相叠加)的被高分布规律有显著的差别。
- A M - band CMFB with a side lobe of about 45 dB was designed using the optimum equal wave method. 通过分析M带滤波器组和M带复用转换器的完全重构条件;用最优等波纹法设计了一个旁瓣约为45 dB的M带余弦调制滤波器组.
- The sound absorption coefficient of three kinds OSB wallboard were tested by the stationary wave method. 采用驻波管法测定了3种定向结构板(OSB)复合墙体的吸声系数;
- With plane wave method,it is proved that the 1D-USPC shares the same bandgap character. 利用平面波法证明了一维超声光子晶体具有一般一维周期层叠结构光子晶体的禁带特征。
- The theoretical response correlates well with dynamic testing of an engineering pil e by the reflective wave method. 理论计算响应与工程桩的反射波法动测结果有较好的相关性。
- For Mr Winton no two waves are alike (one is “as ugly as a civic monument”). 在温顿眼里,每道海浪都独一无二,都像“市政纪念碑那样丑陋无比”。
- The coherence of two waves follows from how well correlated the waves are. 两种波的相参性是由它们的相关程度推断出来的。
- The bandgap structure of one-dimensional photonic crystal was calculated and derived with the plane wave method(PWM). 用平面波法研究了椭圆钢柱与环氧树脂组成的三维简立方晶格声子晶体的带隙结构。
- Incorporating quality detection of highway engineering,the principles of Rayleigh wave method are discussed. 结合道路工程路基施工质量检测,介绍了瑞利波测试技术的方法和原理。
- The periodic variation in amplitude of a wave produced by the superposition of two waves of different frequencies. 波震动由两种不同频率的波叠加在一起而产生的波在某一区域内的周期振动
- The result showed that surface wave method can find out concrete s flaws,in case its parameters are correctly chosen. 结果表明:只要参数选取合理,面波法能够探测出混凝土缺陷,并且效果明显。
- Using seismic image method and low-strain reflected wave method, the paper evaluates the quality of pile daises. 该文介绍了用地震映象和低应变反射综合检测桩承台,评价桩承台质量的方法。
- At the vertex, clear ANEPs composed of two waves, wave P 1 and P 0, were recorded in all experimental animals. 从家兔头顶均记录出了含P0 和P1 两种成份的清晰的面神经诱发电位。
- Adopts step wave method to measure the timeaverage sound level(equivalent continuous sound level) of the sound level meter. 采用阶梯波法;测试了声级计的时间平均声级;即等效连续声级Leq功能;并对实测值和理论值进行比较.
- There is a valley between two mountains and there is a trough between two waves. 两山之间有一谷,西波之间有一伏。
- The two systems of government are polar opposites. 这两种政体正好相反。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries