The economical model of pipeline insulation is divided into single layer structure and double layer structure types.
保温管道的经济模型分为单层结构和双层结构两种。
In addition, the insulation performance of double-layer inflated film and single-layer film greenhouse were compared though measurement in real greenhouses.
另外，通过在实际生产温室中做现场试验，比较两种覆盖下温室的保温性能。
This paper aims to prepare a single layer solar heat reflecting coatings for metal, which integrates the functions of anticorrosion, heat insulation, environment protection, etc.
日光热反射涂料具有隔热降温功能，本文的研制目标是金属用单涂型日光热反射水性涂料，需要将防腐、隔热、环保等多种性能体现在一层涂层中。
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