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Based on the Timoshenko-Mindlin hypothesis and the Hamilton Principle, a set of governing equations of motion for the laminated non-circular cylindrical thick shells were founded.Using the Galerkin procedure,the Mathieu equation only with time variable was obtained,and this equation was solved by the method of increase harmonic balance.

基于Timoshenko-Midlin假设及Hamilton变分原理,建立了层合中厚非圆柱壳的非线性运动控制方程,采用伽辽金技术,得到仅含时间参数的Mathieu型方程,然后应用增量谐波平衡法进行求解。

Ni, Cr, W, Mo, Al, Ti, B and misch metal were added separately or in combination into pure iron containing 0.166% of oxygen. Optical and chemical properties as well as crystal structure of various types of nonmetallic inclusions present in the alloys were studied.

在含氧纯铁中,分別并按组合方式加入Ni,Cr,W,Mo,Al,Ti,B和混合稀土金属,然后利用金相法、岩相法、X射线粉末法和夹杂物的组成定性分析等方法研究了这些脫氧产物的光学性质,化学性质和晶体结构。

The dynamic storage modulus of energetic materials bulk of nitrocellulose filled by RDX and NGU was investigated.

用 DDV-- EA型动态粘弹谱仪对黑索金和硝基胍填充的硝化纤维素基含能材料的动态贮能模量进行了研究。

Arsenian pyrite is the most important Au-bearing mineral, and silicification with quartz veins is the well-marked hydrothermal alteration.

含砷黄铁矿是该矿床最主要的载金矿物,硅化及石英脉是最显著的热液蚀变类型。

He did not have a rich family. He was not born with a silver spoon in his mouth.

他没有富有的家庭,他不是含着金钥匙出生的。

Ingredients: Water, Olive Leaf Extract, Peppermint Extract, Thyme Extract, Lavender Extract, Zinc Sulphate, Witch Hazel Distillate, Azulene, Sodium Hyaluronate, Rosemary Extract, Eucalyptus Extract, Phenoxyethanol, Polysorbate 20

无酒精配方,含橄榄叶、薄荷、薰衣草、金缕梅及锌盐等收敛滋润成分,同时透明质酸钠提供了良好的保湿效果,有助于恢复肌肤干净清爽并具有良好的杀菌消炎能力,适合混合到暗疮皮肤使用。

Ingredients: Water, Olive Leaf Extract, Peppermint Extract, Thyme Extract, Lavender Extract, Zinc Sulphate, Witch Hazel Distillate, Azulene, Sodium Hyaluronate, Rosemary Extract, Eucalyptus Extract, Phenoxyethanol, Polysorbate 20

无酒精配方,含橄榄叶、薄荷、薰衣草、金缕梅及锌盐等收敛滋润成分,同时透明质酸钠提供了良好的保湿效果,有助於恢复肌肤干净清爽并具有良好的杀菌消炎能力,适合混合到暗疮皮肤使用。

In terms of the location of mining areas in Xiang-Qian mercury deposit belt as well as regional geology and paleogeographic setting.the genesis of country rocks is discussed.

梁仁枝,许效松,贵州丹寨寒武系层控型汞——金矿床研究由矿区在湘黔汞矿带所处的位置,结合区域地质及古地理背景,讨论了含矿围岩的成因。

Based on a brief review of semiconductor photocatalytic mechanism and researches in the past 30 years on TiO2 heterogeneous photocatalysis, this paper emphasizes that the natural vanadiferous rutile and its modified products, which have not been investigated by either Chinese or foreign research groups, degrade halogenated organic contaminants. By means of grinding, heating in situ, heating, quenching and electron irradiation, the natural rutile could be modified.

在简述半导体光催化理论及TiO2多相光催化作用近30年研究现状的基础上,重点对国内外一直处於空白状态的天然含钒金红石光催化性能进行研究。

The dry alga glomerules be homogenated with bead mill homogenizer for assay of total lipid and every fatty acid content each by chloroform methanol...

每一纲的微藻脂肪酸组成都有各自特点,绿藻纲中 1 6∶0、1 6∶1(n - 7)、1 8∶1 (n - 9)含量较高,但微绿球藻中 1 6∶1 (n- 7)、2 0∶5(n - 3)含量远高于其他绿藻;金藻纲中含大量1 4∶0、1 6∶0、1 8∶3(n - 3)、2 2∶6(n - 3);硅藻纲中 1 4∶0、1 6∶0、1 6∶1 (n - 7)、EPA含量较高;黄藻纲的异胶藻富含1 6∶0、1 6∶1 (n - 7)和EPA。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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