单词	tie-down
释义	tie-down noun ˈtī-ˌdau̇n  : a fitting or a system of lines and fittings used to secure something (such as an aircraft or cargo) Word History First Known Use circa 1942, in the meaning defined above
随便看	Naphthol Blue Black Naphthol Green B Naphthol NEL Naphthol Yellow S naphthols naphthoquinones naphthoxide naphthoxy- naphthoyl naphthyl methyl ketone naphthylacetic acid naphthylamine Naphthylamine Black naphthylamines naphthylaminesulfonic acid naphthylene naphthylic naphthyls naphthylthiourea naphtols Napier napier grass Napier's analogies Napier's bones Napier's circular parts

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