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airfield earthwork
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airfield earthwork
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airfield earthwork
飞行区土石方工程
针对机场飞行区场地进行的填筑、土石方开挖及压实等施工作业的统称。
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safety of nuclear weapon
safety of oil and gas pipeline emergency repair
safety of oil and gas pipeline maintenance
safety of oil and gas testing
safety of oil production downhole operation
safety of oxygen systems
safety of plate shears
safety of pressure casting
safety of railway traffic
safety of sand falling cleaning operation
safety of sand mixing operation
safety of special equipment supervision and management
safety of stamping machinery
safety of transgenic medicinal resourses
safety of wood planer
safety of woodworking machinery
safety operation of civil engineering system
safety operation of crane
safety operation regulation
safety paper
safety pedagogy
safety performance
safety performance evaluation
safety period of fertility alteration
safety pharmacology
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