The packaging film (10) of the bag body (19) has a moisture-proof layer (12) composed of an aluminum foil and an intermediate layer (13) composed of a drawn nylon.
袋体（19）的包装膜（10）具有由铝箔形成的防潮层（12）、以及由延伸尼龙形成的中间层（13）。
The thermostat energy storing labor protection suit includes inner layer and fire-retardant outer layer with thermostat energy storing radiation-proof layer coated with solid paraffin in between.
本发明提供了一种恒温储能劳保服，包括内层和外层，所述内层与外层之间设置涂附有常温为固体的石蜡的恒温储能层。
Said invention utilizes plastic film or plastic board as the water-proof layer of root, while the plastic layer is mounted on the surface of root or in the one layer of multilayer structure of root.
本发明用塑料薄膜或塑料板作为房顶的防水层，塑料层位于房顶表层，或位于房顶多层结构中的其中一层。
The paper introduced the construction technology of bituminous concrete paving coat, the materials choice of water proof layer.
介绍了沥青混凝土铺装层的施工技术，并对防水层材料的选择等技术也作了介绍。
The paper introduced the construction technology of bituminous concrete paving coat, the materials choice of water proof layer.
介绍了沥青混凝土铺装层的施工技术，并对防水层材料的选择等技术也作了介绍。
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