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bottom-grab
gen. 水底挖泥抓斗; 底部咬合采泥样器
oil 挖泥抓斗
bottom grab
ecol. 表层取样器
tech. 啮合采泥器; 海底挖式取土器; 咬合采样器; 蚌式采样器; 水底挖泥抓斗; 挖泥抓斗

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