... open-bottom diving bell 底部敞口式潜水钟 open-cell foamed plastics 开孔泡沫塑料 open-chain hydrocarbons 开链烃 ...
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closed-cell foamed plastics 闭孔发泡塑料
open-cell foamed plastics 开孔泡沫塑料
closed cell foamed plastics 闭孔泡沫塑料
d-cell foamed plastics 闭孔沫子份子化合物塑料关上
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