REE在风化壳中富集分异受风化壳发育程度、花岗岩原岩中ree含量及其分布和分配的影响。
The extent of ree enrichment and differentiation is affected by ree concentrations and distributions in the primary granitoid rocks, weathering degree, etc.
方法对我院胸外科自1983年1月至2004年4月手术治疗的32例异时第二原发肺癌患者的临床资料进行回顾性分析。
Methods Between January 1983 and April 2004, 32 patients with metachronous second primary lung cancers were operated in our department.
江西武山铜矿的浮选实验研究表明：异丙基黄原酸甲酸乙酯与黄药相比，对硫化铜矿具有更高的回收率，精矿中铜品位更高。
Floatation experiment in Wushan copper Mine shows that isopropyl xanthogen ethyl formate has higher recovery ratio and higher copper grade than xanthate when they are used as copper sulfide collector.
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