“煤炭贸易差额”的概念、定义、翻译、参考文献-科学参考

单词	煤炭贸易差额
释义	煤炭贸易差额 Encyclopedia 理学能源环境统计释 trade balance of coal煤炭贸易差额一个国家原煤及煤炭加工产品的进出口值之差。
随便看	set contraction mapping set cover set cover algorithm set-covering deployment set-covering problem set decoration for film set dense in itself set difference set direct product Setebos set-element relation set equivalent by dissection set extention set field set fixed elementwise set function set functor set gauge Seth Carlo Chandler sethoxydim SETI setiger setiger juvenile set inclusion set-indexed process

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