现在包壳的外层部分是厚壳层或尘埃包层的形状。
The outer part of the envelope now has the form of a thick shell or dust cocoon.
研究了利用表面氟化技术制作PMMA聚合物光纤包层的可行性。
The feasibility to use surface fluorination technology in the formation of the cladding of PMMA POF is studied.
在日本，茶礼，其中和服包层的妇女提供热茶唱传统歌曲是很受欢迎。
In Japan, a tea ritual in which Kimono-clad women serves hot tea singing traditional songs was very popular.
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