“PSYD”是“Purdue Study of Youth Development”的缩写，

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“COOL”是“Council Of Our Library”的缩写，意思是“我们

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“MESA”是“A Mine Electrical Standards

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“MESA”是“Magnetic Electric Source Analysis”的缩写，

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“CPIA”是“Chemical Propulsion Information Agency”的

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“CPIA”是“Chandler Presentation And Interaction

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“CRPL”是“Cedar Rapids Public Library”的缩写，意思是

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“PCLS”是“Peak Constrained Least Squares”的缩写，意

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“PCLS”是“Postulate of Constant Light Speed”的缩写，

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“PCLS”是“Pierce County Library System”的缩写，意思

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