sand gravel

短语词组

短语

• sand and gravel 砂砾石;砂卵石层
• sand -gravel fan 砂砾岩扇体
• sand and gravel strata 砂卵石地层
• replacement sand -gravel 换填砂砾
• sand and gravel culture 砂田栽培
• sand and gravel drilling 砂砾石层钻探
• waterin sand and gravel 岩土中的水
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