名词
中文翻译：Unknown
同义词：
['Longwall mining', 'Longwall method', 'Longwall extraction']
例句：
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1. Thelongwall caving method is widely used in the coal industry.
长壁采空法在煤炭工业中广泛应用。
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2.The longwall caving method has proven to be an effective way to extract coal from underground mines.
长壁采空法已被证明是一种从地下矿井提取煤炭的有效方法。
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3. In recent years, there has been a renewed interest in the longwall caving method due to its potential for increased efficiency and safety.
近年来，由于其提高效率和安全性的潜力，对长壁采空法的兴趣重新燃起。