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Xyloid coal (Geology Dictionary)

Xyloid coal : Also called lignite or brown coal.

A soft brown fuel with characteristics that put it somewhere between coal and peat.

_ ស្វែងរកឬបកប្រែពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖
ឯកសារការងារនិងរៀនគ្រប់ប្រភេទ៖​
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