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Application of accelerant CaCl 2 in deepwell cementing was not allowed for some time in Liaohe Oilfield.
深井添加CaCl2促凝剂固井在辽河油田一度视为禁区.
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The leaching process of electricity catalysis zinc sulfide concentrate in FeCl _ 3 - HCl - CaCl _ 2 system has been studied.
研究了电催化三氯化铁浸出硫化锌精矿工艺.
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