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单词
block coal
释义
block coal
block coal
[
′bläk ‚kōl
]
(mining engineering)
A bituminous coal that breaks into large lumps or cubical blocks.
Coal that passes over 5-, 6-, and 8-inch (127-, 152-, and 203-millimeter) block screens; used in smelting iron.
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更新时间:2025/8/3 13:01:43