insulating protective material
insulating protective material
绝缘保护材料
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The technique of directly buried steam pipeline such as insulation construction, insulating material, outside protective pipe, fixing support, compensator, and steam trap connections is discussed.
探讨了直埋蒸汽管道的保温结构、保温材料、外保护管、固定支座、补偿器、疏水装置等技术。
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