查询词典 annular

The method of multiple scales was used to solve the Duffing equation, the solutions were used to analyze qualitatively the effect of boundary conditions, ratio of damp, external excitation, and ratio of inner radius to outer radius on the second-harmonic resonance of an annular thin plate.

用多尺度方法求此振动控制方程的3次超谐共振解和1/3亚谐共振解，并且定性地探讨边界条件、内外半径比、激振力和阻尼对环形薄圆板在这两种次谐共振下的动态响应。

Probably the most problematic situations are the naturally fractured formations where the operator may face total loss with no mud return in the annular.

大概是最有问题的情况下，是自然形成的裂缝所在的营办商可面对全损无泥回报，在环形。

The experimental investigation shows that the size of the flattop profiles and the distance between the two positions decrease with the increase of the spatial coherent length and the obstruction ratio of the annular aperture .

研究表明，两处平顶光束的大小及两处平顶光束之间的距离随着空间相干长度和环形光阑拦截比的增大而减小，随聚焦透镜焦距的增大而增大。

Both of them harbour a large proportion of diurnal species that exhibit conspicuous colouration on the elongated forewing and reduced hindwing and the annular black-yellow abdomen plus the chemical defence employing plant alkaloids is often considered to be relevant

此两族昆虫都包含大量日行性物种，且在外型上具有显眼的色彩、较长前翅、退化的后翅以及黑、黄相间的腹部环纹，再加上以植物碱作为二次代谢物的防御机制，因此它们常被认为具有拟蜂现象(wasp-mimicry)。

The hardware contains parallel lights insurement. Panoramic Annular lens. CMOS imaging device. 3-D control.The software achieves numerical integral, numerical differential coefficient, fast fourier transfer. smoothing process in the Matlab.

硬件主要由平行光管、全景环形成像镜头、CMOS成像器件、三维调节系统这么几部分组成，软件是以Matlab为平台实现了数字积分、数字微分、快速傅立叶变换、平滑处理等方面的工作。

Let's imagine that several small light boats are tossed in the annular surfing way with adventurers and they shout and cry frenziedly.

几条小皮艇正载着冒险者们在环形的冲浪道上颠簸翻滚，渠道里充斥着疯狂的呼喊和尖叫声，尽管受到暴风骤雨的袭击，但是还是有很多勇敢者迎头而上。

Durnin are analyzed basing on analytic expression for annular Fresnel diffraction.

从圆环菲涅耳衍射的解析表达式分析了由J。

Based on the Fresnel diffraction integral, the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed.

摘要基于菲涅耳衍射积分公式，推导出了会聚球面波通过环形光阑后场分布的解析公式，并讨论了一些特殊情况。

The spatial propagation properties of output annular laser beam from an unstable resonator are studied based on Fresnel diffraction integral.

本文从菲涅耳衍射积分公式出发研究了激光器非稳腔输出环状光束在空间的传输规律。

Staring from Fresnel diffraction integral,we deduced the optical intensity distribution in the Fresnel zone of the diffraction field of the annular-aperture lens axicon.

从菲涅耳衍射积分公式出发，推导多色高斯光束被球差透镜衍射后光强分布的解析公式，进行数值模拟和物理分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。