查询词典 negative angle

The negative angle of refraction behavior associated with the negative index of refraction exhibited by DNG metamaterials is demonstrated.

并利用点源模拟出平面双负材料具有突破Rayleigh衍射极限使倏逝波成像的能力即：完美透镜现象。

A second important point is that the wing on the downstroke must either rotate bodily into a more leading-edge-down position (ie: negative angle of attack), or the wing membrane itself must be flexible enough to twist into this new position.

第二个重要的一点是，机翼就必须要么downstroke旋转身体成为一个更领先式的立场，或翼膜本身必须具有足够的灵活性以扭到这个新职位。

Objective To evaluate the clinical application of the photopic negative response in open angle glaucoma.

目的 评价视网膜电图(electroretinogram， ERG)的明视负波反应(photopic negative response， PhNR)在开角型青光眼患者中的临床应用价值。

Results show that the changes of the ratio between the thickness of positive angle layers and the negative angle layers have an effect on the deformation of the structure under the same electric loading.

结果表明，当复合材料中正的铺层角和对应的负铺层角的厚度比改变时，在相同电载荷作用下对结构的变形有较大的影响。

This is a clockwise direction so you must hold down the Shift key to specify the angle graphically or enter a negative angle with the keyboard.

这是顺时针方向的，所以用户必须按住 Shift 键来指定角的位置或是用键盘键入负角。

Such as the cutting width reduced to 50% below the pressure angle as a negative angle, cutting feed direction of resistance and inconsistent, it will cause vibration.

如切削宽度减小到50%以下，压力角成为负角，切削抗力与进给方向不一致，就会引起振动。

The third section of the article mainly discussed the effect of the mass media from two different angles: the constructive angle and the negative angle.

文章第三部分从正负两方面来谈大众媒介提供社会行为示范对受众的影响，并重点分析了其消极影响。

The conventional tail must be at a negative angle of attack, and the Canard tail at a positive angle.

通常的尾翼必须处于负迎角，而鸭式尾翼则为正迎角。

The high drag of the ramjets meant the blade angle had to be set to a very negative angle when power was cut, and this led to the Hornet plummeting at 15mps during auto rotation.

作者：高拖意味着冲压发动机叶片的角度，就必须建立一个非常消极的角度来看，在电源被切断，这导致了大黄蜂在自动旋转15mps在直线下降。

For example, all previous theoretical predictions and experimental observations have been questioned by Valanju et,wherein the authors claim that the presence of dispersion prevents power transmitted at RHM-LHM interface from refracting at a negative angle, which means the refraction of group velocity n_g carrying the physics information isall along positive refraction, but "negative refractive material " means only the refraction of phase velocity np is negative.

涉及最多的是负折射现象在物理上的因果率，例如Valanju等人通过一些理论计算认为所谓的"负折射率材料"只是相速的折射率n_p可以是负的，而携带物理信号的群速度的折射率n_g永远是正的，由此引发了许多争议。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。