“lookout tower”的概念、定义、翻译、参考文献-科学参考

单词	lookout tower
释义	lookout tower [`lu̇k´au̇t ´tau̇·ǝr] ^ENGINEERING In marine operations, any tower surmounted by a small house in which a watch is habitually kept, as distinguished from an observation tower in which no watch is kept.
随便看	negative booster negative catalysis negative charge negative conductor negative correlation negative crystal negative easement negative effective mass amplifiers and generators negative electricity negative electrode negative electron negative electron-affinity material negative element negative elongation negative empathy negative feedback negative g negative gene control negative glow negative-grid generator negative-grid thyratron negative impedance negative-impedance repeater negative indication negative integer

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