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论述了管道之保温及直埋保温管道,并就1例说明,采用直埋敷设较地沟敷设节省20％左右初投资,寿命延长10年左右。
The insulation of pipes and buried insulation pipes were discussed. In one example, the initial investment was about 20% less than that of laying trenches, and the life span was extended by about 10 years.