The covering material that encases the core of an optical fiber. the cladding material usually has a lower index of refraction than the core material and may be either glass or plastic.
一种包装光纤芯的保护材料。保护材料的折射率通常比光纤芯的折射率低，它一般是玻璃或塑料。
The glass fiber strengthen unsaturated polyester mould pressing shape outer covering. Have the strength high, bear the impact and bear the good function in etc. in corrosion.
玻璃纤维增强不饱和聚脂模压成型外壳，具有强度高，耐冲击、耐腐蚀等优良性能。
This article presents the experimental results concerning the effects of four types of covering layers on the sound absorptive property of a fiber glass board.
本文通过试验探讨了四种覆面展对玻璃棉板吸声性能的影响。
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