After averaging the same flight segments by multiplying mission mix rates, then the weighted mean profiles can be obtained, which represent the composite maneuver flight loading spectrum.

将各机动飞行任务的同类任务段和同类载荷循环乘以任务混频后进行加权平均即得到机动飞行类综合载荷谱。

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Spectrum analysis was performed to determine the micro-mechanism of damage evolution of C fiber 3-D braiding composite material.

通过声发射波形信号的频谱分析，研究了碳纤维三维编织复合材料拉伸损伤的细观机理。

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There were some difference in spectrum of IR, UV-Vis and DRS between the composite materials and polycarbonate .

纳米复合材料的红外，紫外-可见吸收光谱和DRS测试表明复合材料具有与基体材料不一样的光谱特征。

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Mr Ball next treats us to a brisk description of the human eye (remember rods and cones from school biology?), an explanation of why Newton was right and Goethe wrong about the composite character of white light, and an account of the 19th-century regimentation of the continuous colour spectrum by means of colour wheels and other classifying devices.

ECONOMIST: Science and history of colour