女朋友水太多进去就软了,伊人久久大香线蕉av影院,被十几根触手扒开腿猛戳动漫 ,暴露yín荡女友17部分

隔熱材料的選用必須因地制宜，既要有良好的隔熱性能，又要經濟實用。
Selection of insulation materials must adjust measures to local conditions, should not only have good heat insulation performance, and economic and practical.
隔熱材料分幾種類型，一種是加工成固定形狀及規格的板塊，有固定的長度、寬度和厚度，可根據庫體安裝的需要選擇相應規格的板塊，高、中溫冷庫一般選用10厘米厚的板塊，低溫庫及凍結庫一般選用12厘米或15厘米厚的板塊；
Insulation several types, one is processed into fixed shape and specifications of the plate, a fixed length, width and thickness, can choose according to the needs of library body installation of corresponding specification plate, high and medium temperature cold storage generally selected 10 centimeters thick plate, low temperature library and freeze library generally selected 12 cm or 15 cm thick plate;
另一種可以用聚氨脂噴涂發泡，把材料直接噴到已經建成的磚或混凝土倉庫中，定形后既防潮又隔熱。
Another can use spray polyurethane foam, the material directly spray to have been built of brick or concrete warehouse, after setting is moisture-proof and insulation.
隔熱材料板塊有聚氨脂、聚苯脂等。聚氨脂不吸水，隔熱性較好，但成本較高；聚苯脂吸水性強，隔熱性較差，但成本較低。
Polyurethane and polystyrene insulation plate fat, etc. Better insulating polyurethane not bibulous, stays, but higher costs; Poor insulating polyphenyl ester water imbibition is strong, stays, but lower cost.
現代冷庫的結構正向裝配式發展，制成包括防潮層和隔熱層的庫體構件，做到現場組裝，其優點是施工方便、快速，且可移動，但造價比較高。
Made including the development of modern cold storage structure was fabricated, moistureproof layer and insulating layer of library components, field assembly, its advantage is construction convenient, fast, and mobile, but the cost is higher.