名词
中文翻译：煤块压痕
同义词：
['coal block imprint', 'coal crate impression例句：1. The miners used to take the cullet impressions from the coal seams for their measurements.（矿工过去会从煤层中取出煤块压痕来进行测量。）']
例句：
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1. The miners used to take the cullet impressions from the coal seams for their measurements.
矿工过去会从煤层中取出煤块压痕来进行测量。
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2.The engineer carefully studied the cullet impressions left by the ancient tools to understand how they were made.
工程师仔细研究了古代工具留下的煤块压痕，以了解它们是如何制作的。
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3. The cullet impressions are a valuable resource for studying the geological history of the region.
煤块压痕是研究该地区地质历史的重要资源。