Hecla

基本解釋

After buying the operations of US-based Hecla and South Africa's Gold Fields in 2008, Rusoro is the only international company ex-tracting gold in Venezuela.
2008年收購(gòu)總部位于美國(guó)的Hecla和南非GoldFields的業(yè)務(wù)后，RusoroMining成為在委內(nèi)瑞拉開采黃金的唯一一家跨國(guó)公司。
A new kind of cylindrical lens array (CLA), named as hybrid element cylindrical lens array (HECLA), which composed of a few whole elements and two half elements, is proposed in this paper.
提出了結(jié)構(gòu)新穎的混合單元柱面透鏡列陣 (HECL A)系統(tǒng) ,在該系統(tǒng)中引入了半單元結(jié)構(gòu)。
THE FOLDING CHARACTERISTICS AND TECTONIC EVOLUTION OF HECLA HOEK SEQUENCE OF WEDEL JARLSBERG LAND, SPITSBERGEN
斯匹茨卑爾根群島韋特爾茄爾斯冰山地區(qū)海克拉霍克巖系褶皺特征與構(gòu)造演化