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For comparison reason, the planar and spatial models based on a forewing structure were analysed, it is shown that the cambered corrugation in the wings can improve the flexural stiffness of dragonfly wings effectively; the veins distribution and their size variation in different zones are quite reasonable.

对前翅平面模型和立体模型的静力性能进行了对比分析,发现翅膀中的起拱、起皱结构可显著提高蜻蜒翅膀的弯曲刚度;分布在翅膀不同区域的翅脉截面尺寸与其受力大小是完全相适应的。对翅膀模型分有膜、无膜两种情况进行对比分析,得出翅膜中产生的膜应力刚化效应可有效改善翅膀结构的刚度。

Wings blackish-brown with two conspicuous ground-yellow maculae on the median cell of forewing and S-shaped outer transversal line with ground-yellow reached two-thirds of posterior margin, and hindwing with a small brownish-black spot on the center of upper and lower surfaces. Average wingspan 24.64 ± 0.58 mm (range = 20.50-28.00mm), and male adults averaged 8.56 ± 0.18 mm long (range = 7.50-9.20mm) by 3.85±0.12 mm wide (range = 3.50-4.80mm).

雄成虫,体长8.56±0.18mm(范围7.50~9.20mm),翅展24.64±0.58mm(范围20.50~28.00mm);触角长度不超过前翅的1/2;前翅正面由黑褐色鳞片组成翅的底色,中室端脉内有一较大的土黄色或桔黄色斑纹,外线明显、土黄色、从翅前缘伸至后缘呈反"s"形弯曲,到达后缘2/3处;后翅中部有黑褐色小斑。

Transversely isotropic ; layered saturated ground ; Biot's motion equation ; elastic circular plate ; Fredholm integral equation

观各向同性;饱和层状地基; Biot动力方程;弹性圆板; Fredholm积分方程

Unfortunately for her and our neighbors, I was dead set on playing the French Horn and I continued blasting away all the way from sixth grade until I graduated high school.

对于她和我们的邻居来说不幸地是,我已经了下心要吹圆号了,而且从六年级开始就把它进行到底,一直到高中毕业。

Polyphenylene Sulfide as a heat-resistant, corrosion resistance, high rigidity material, and instrumentation can be the production of gears, axle sleeve; in the electrical industry, for the skeleton, bearing, terminal, etc.; in the chemical equipment, shell can be made pump, impeller, valves, etc.; in the automotive industry, for axial transverse rod bushing, fuel system components.

聚苯硫醚作为耐热、耐蚀、高刚性材料,在仪器仪表中,可制作齿轮、轴套;在电器工业中,作骨架、支座、接线柱等;在化工设备方面,可制作泵壳、叶轮、阀门等;在汽车工业,作轴向拉杆衬套、燃料油系统部件等。

Flat bed machines are desired for knitting specific shapes and for producing full-fashioned knit pieces.

机适于生产特殊开关的织物或全成型服装的衣片。

In order to develop this local property,this paper presents a method,which uses Fourier Series to approximate the boundary shapes of the shafts with periodic boundary of cross section,and uses the conformal mapping in Theory of Function of a Complex Variable to make the complicated boundary shapes of the shafts map a unit circle.Thus elastic theory can analyze...

本文提出一种方法,其实质是:采用富里埃级数来逼近截面呈周期性变化边界的轴类零件的边界形状;并应用复变函数论中保角映射原理,将零件复杂的边界形状映像成单位圆,从而使弹性理论可以分析和计算复杂边界轴类零件的应力场;再通过留数的求解实现保角映射的反变换。

These fibers located in the lateral funiculus, lateral horn, intermediate gray and the area surrounding the central canal, forming a transversal fiber band with most of the fibers in the lateral horn.

这些纤维和末梢见于外侧索、侧角、中间灰质和中央管周围,共同连成一条带。

The same results were observed in the brain of the unilateral pyramidotomy group above the level of the transection site. Below the level of the transection site, the BDA positive fibers were seen in the right pyramid of medulla oblongata and the left dorsal funiculus of spinal cord, but the BDA positive fibers in the left pyramid of medulla oblongata and the right dorsal funiculus of spinal cord were not seen.

锥体束断损伤大鼠在损伤部位以上可见双侧对称的BDA阳性纤维束,损伤平面以下在右侧延髓锥体和左侧脊髓后索中见有BDA阳性纤维束,损伤侧锥体和右侧脊髓后索中未见有BDA阳性纤维束。

Well, French people like to eat Galette des Rois and play the game of disguising themselves as King or Queen at the time, in the same way we do of eating rice glue ball and playing lanterns at Lantern Festival, quite funny and interesting!

法国人过主显节要吃三王朝圣饼和玩扮国王或是皇后的游戏,就像我们过元宵节要吃元宵提灯笼一样,趣味生!

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。