ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core.
针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ZJS系列钻具。
ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core.
针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ZJS系列钻具。
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