... caulking堵缝 填塞 caunter交错矿脉 caustobiolith可烧性生物岩 ...
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... 名字: Caunter 姓: John 标签: John F Caunter ...
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Tracy Caunter 翠丝·卡特
John F Caunter 标签
YNF30 jackdrill with caunter-cylinder is developed with the aim at resolving the problem existing in the deep-hole drilling by single-cylinder hand diesel jackdrill.
针对当前单缸手持式内燃凿岩机深孔凿岩存在的问题，研制了YNF30型带副缸式内燃凿岩机。
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