• 介绍一种反射高效率光纤半导体激光器耦合技术

    A coupling technique between a cone endface fiber and LD with the advantage of high efficiency and low reflectance is presented.

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  • 建立光纤透镜光纤对耦合理论模型得到耦合系数计算公式

    The coupling between butt fiber and cone lensed fiber is described in this paper. A theoretical model is presented and the formula of coupling efficiency is given.

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  • 襟翼取代了原本襟翼的设计,同时主体上方额外长度增加,现在几乎要碰到鼻

    A single flap replaces the previous double design and the additional winglets over the main profile have increased in length, almost reaching the side of the nosecone.

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  • 关于法兰C主轴花盘等机床附件的联接定位问题,目前尚未有统一解释确切结论

    There is no unified explanation and exact conclusion on connecting state between short conical flange type C- form spindle end and face plate.

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  • 分析了缩、缩径凹摩擦系数、缩径管坯初始翘曲向伸长率的影响规律

    In addition, this paper presents how the diameter reducing rate, the die semicone angle, the friction coefficient and the original wall thickness influence the buckling and the axial elongation rate.

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  • 大型汽轮发电机定子部绕组及支承简化连续壳-板组合结构

    The stator winding end baskets of large turbo-generator is simplified into a model of continuous conical shell-plate combined with structure.

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  • 型变截面矩形钢管指两型变截面、中间为等截面组合矩形钢管构件。

    Double-tapered rectangular steel tubes are composed of two tapered ends and a prismatic intermediate part.

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  • 型变截面矩形钢管指两型变截面、中间为等截面组合矩形钢管构件。

    Double-tapered rectangular steel tubes are composed of two tapered ends and a prismatic intermediate part.

    youdao

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