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声波法勘探
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声波法勘探
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工程地球物理勘探
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acoustic exploration
声波法勘探
以人工的方法,向介质辐射声波,并观测声波在介质中传播的特性,利用介质的物理性质与声波传播速度等参数之间的关系,探测岩体的地质构造、物理力学性质的一种物探技术。
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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
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safety of plate shears
safety of pressure casting
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safety of sand falling cleaning operation
safety of sand mixing operation
safety of special equipment supervision and management
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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
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safety performance evaluation
safety period of fertility alteration
safety pharmacology
safety physiology
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