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双动双层岩芯管
eng.geol. double-tube rigid-type core barrel; rigid-type double-tube core barrel
tech. core head of double tube-rigid type; double tube rigid barrel; double tube rigid type core barrel; rigid double tube; rigid-type double tube core barrel; stationary inner-tube core barrel
双动双层 岩芯管
: 8 phrases in 2 subjects
Engineering geology3
Technology5

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