?砂矿区
... diamond placer 金刚石砂矿 placer claim 砂矿区 placer drilling 砂矿床钻探 ...
?开采砂矿权
... marine placer 海成砂矿 placer claim 开采砂矿权 valley placer 河谷砂矿 ...
Crystallex continued its claim in Venezuelan courts even as Placer Dome abandoned the project and the government renationalized it.
FORBES: Gold Rush
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。