光导管可采用有内反射涂层的空心管轴，或采用光导纤维技术实现。

These can be hollow shafts or ducts with reflective internal finishes or may use fibre-optic cable technology.

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作为一种材料的制备方法，该技术在许多方面得到了广泛应用，如制备玻璃、纤维、粉末、薄膜、涂层、复合材料等，尚未在纺织应用上展开研究和应用。

As a method of preparing such materials, this technology has been applied to a great deal of aspects such as preparing specific glasses, fibers, powder, films, coatings, composite materials, etc.

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本文对金属基复合材料用增强碳纤维的涂层技术研究作了综述。

This paper summarizes the studies about carbon fibre coatings for fabrica_ ting metal-matrix-composites.

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