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液动冲击器
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液动冲击器
Encyclopedia
理学
孔内钻具
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hydro-percussive tools
液动冲击器
以钻探冲洗液为动力介质,利用高压液流能量及动态水击能量产生连续冲击载荷的孔底动力机具。又称液动潜孔锤。
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myth of Shaohao
myth of the nether world
myth of Yandi the Emperor Shennong
myth of Yellow Emperor
myth of Yi
myth of Yu the Great
myth of Zhuanxu
mytholog
mythological archetypal criticism
Mythological Drama
mythology study of ancient history distinguish school
Mythopoeic School
My Thoughts on Calligraphy
myth play
myths about the emergence of humans
myths about the emergence of the universe
myths about the invention of culture
Myths and Legends
Myths of Kojiki and Nihonshoki
Myungdong Theater
Myung-gon Kim
Myvawax
My Way Home
My wife married my brother
myxobacteria
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