iron placer

基本解释

• [地球科學]砂鉄鑛

英汉例句

雙語例句

• A key to ore dressing of quartz sands includes rude ores of high or low quality, occurrence and distribution of detrimental impurity such as iron and aluminium in size grades of placer deposits.
  石英砂原鑛質量的優劣，有害襍質鉄、鋁的賦存狀態及其在各粒級砂鑛中的分佈，是決定選鑛傚果的關鍵。

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词组短语

短語

• placer iron 砂鉄
• placer r iron 砂鉄

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专业释义

地球科學

• 砂鉄鑛