The objection to the placer origin have centred around the softness of uranium compounds.
反對砂礦成因的論據(jù)主要是:鈾的化合物不耐磨蝕.
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In which a long history of placer gold mining.
其中砂金開采歷史悠久.
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Placer mining: Oldest method of recovering gold from alluvial deposits.
砂礦開采: 從沖積層回收黃金的最古老方法.
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Dredging is the most important placer - mining method today.
挖掘法現(xiàn)在是最重要的砂礦開采的方法.
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The operation practice indicated that the remining of placer gold in Laozuoshan Gold Mine was efficacious.
生產實踐表明,采金船復采在老柞山金礦的應用是行之有效的.
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A new technic of purifying gold, silver from placer gold without pollution was proposed.
提出了一種無污染從砂金中提純金 、 銀新工藝.
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This primitive form of placer mining is still used in some places for panning gold.
這種原始的砂礦開采形式至今還在一些地方用來淘金.
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The method of gold placer mineral includes significant prospecting information in the prospecting assessments gold deposits.
在金礦找礦和評價工作中,重砂測量方法能提供重要找礦信息.
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The fineness of placer gold in this district is apparently featured by inhomogeneity, inheritance and afterdeformation.
該區(qū)砂金成色具有明顯的不均一性 、 繼承性和后期改造性.
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Liaoning Xiuyan Nephrite Placer Deposit ( XNPD ) is a secondary deposit of primary nephrite ore.
遼寧岫巖軟玉砂礦 ( 又稱河磨玉礦 ) 是原生軟玉礦的次生砂礦床.
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The associated minerals are the important indicator of the genesis and enrichment of placer gold.
伴生礦物是砂金成因和富集規(guī)律的重要指示標志.
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Eraluating the mined area is one of effective and dependable ways for exploring placer gold.
指出以過采區(qū)為依據(jù)尋找砂金礦可靠性大,風險度小,是行之有效的途徑之一.
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In this thesis, placer based on optimizing the power consumption of clock gating network is presented.
本論文研制之電路擺置器, 乃基于將用于低功耗設計下之閘控制時脈網路之功率消耗最佳化.
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Pinggui Sn placer in Guangxi was discovered and exploited as early as the Bronze Age.
“平桂”砂錫礦,早在“青銅時代”已被發(fā)現(xiàn)、開發(fā)利用.
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