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underground pipeline
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underground pipeline
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underground pipeline
地下管道
敷设在天然或人工回填地面以下或周围覆盖有一定厚度土体的管道。
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small peptide
small perturbation
small-perturbation theory
small-perturbation theory of aerodynamics
small piece of land surrounded by water islet
small polaron
small population
smallpox
smallpox inoculation
smallpox virus
smallpox virus,variola virus
small punch test
small region method
small resolution
small right module
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Small-rock Mountain Adobe
small roots of polynomial congruences
small rotation
Small Ruminant Research
small rural school
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small sample plot
small sample problem
small saphenous vein
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