单词	secondary emission
释义	secondary emission noun : the emission of electrons from a surface that is bombarded by particles (such as electrons or ions) from a primary source Word History First Known Use 1918, in the meaning defined above Medical Definition secondary emission noun : the emission of electrons from a surface that is bombarded by particles (as electrons or ions) from a primary source
随便看	Madeira Madeira chair madeira cockroach Madeira embroidery Madeira mahogany Madeira roach Madeira vine Madeira wood Madeira-vine family madeiran madeirans madeiras madeleine madeleines mademoiselle mademoiselles co-star co-starred co-starring co-stars co-surfactant co-surfactants co-tenant co-tenants co-tradition

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