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111籽晶的偏角和偏离方向对生长无位 错真空区熔硅单晶的影响········································································……蒋泉等(1)环烷酸萃取法分离铜中的钙和铅······
Effect of declination and deviating direction of seed crystal on the growth of silicon-free single crystal in dislocation free vacuum region ································ ...... 1) naphthenic acid extraction of copper and lead in the separation of copper