| 单词 | 密封材料 |
| 释义 | 〔undercoat〕A coat of sealing material applied to a surface before the outer coats, as of paint, are applied.内涂层：在上漆或其它涂层之前涂于表面的密封材料〔paraffin〕A waxy, white or colorless, solid hydrocarbon mixture used to make candles, wax paper, lubricants, and sealing materials. Also called paraffin wax 石蜡，硬石蜡：一种蜡质的白色或无色的固体碳化氢混合物，用于制做蜡烛、蜡纸、润滑剂和密封材料 也作 paraffin wax〔propolis〕A resinous substance collected from the buds of certain trees by bees and used as a cement or sealant in the construction of their hives.蜂胶：蜜蜂采自某些树的花的胶状物，在建筑蜂窝时用作加固或密封材料〔encapsulant〕A material used for encapsulating.胶囊密封材料：用来包裹的胶囊状物质 |
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