...β β1 2β 2 ※ 弦长（chord length） l R β 2 β 1 R 2 β ※叶片角度关系式 l β 2R β 2 β 1 β 2※ 弧高（camber height） f l l 8R 7※ 叶片间距（blade pitch/ spacing） 叶片的彼此间距会影响风扇气动性能，及风扇所产生的噪音，间距太小（即流道过窄...
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传统的前向拱丝越来越难以满足目前封装的高密度要求，反向拱丝能满足非常低的弧高的要求。
Traditional forward looping technology is becoming hard to meet high-density requirements of IC Packaging, and reverse looping can comparatively achieve very low loop height.
短弧氙灯是一种发光强度高，具有从紫外到红外的连续光谱的点光源。
The short arc Xenon lamp is a sort of point source having very high luminous intensity and a continuous spectrum from ultraviolet to IR.
模拟结果表明，在小弧长和高噪声的条件下，这种新的估计器性能优良。
Simulation results showed that under conditions of small arc length and high noise, which often occur in practice, the approximate maximum likelihood estimator performs well.
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