Filament spreading width is tested separately under the hoop and helical winding.

分别测试了绕丝嘴在环向和纵向缠绕时的展纱宽度。

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The speed of flame spreading decreases as width of the wood strips increases.

木条宽度越大，火焰传播速度越慢。

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The influence of atmospheric turbulence on the relative beam width spreading is larger for PCFT beam array with larger beam order and smaller coherence length.

光束阶数越大、相干长度越小，部分相干平顶光束序列的相对束腰宽度扩散较快；

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With a different hole design, crystal fibres can do the opposite trick as well, spreading the light much more evenly across the width of the fibre and thereby reducing non-linear effects.

ECONOMIST: A new approach to making optical fibres