英语词汇decline in economic usefulness是什么意思，decline in economic usefulness的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	decline in economic usefulness
释义	decline in economic usefulness　【经】经济效用降低
随便看	nodal seal resonator nodal section nodal set nodal slide nodal surface Nodal Switching System nodal system development nodal tachycardia nodal tissue nodal triangle nodal value nodal values nodal-point keying nodalizer nodancephalia NODC nodd nodded nodded nodded noddie nodding nodding nodding nodding

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