“tugboat”的概念、定义、翻译、参考文献-科学参考

单词	tugboat
释义	tugboat [`tǝg´bōt] ^{NAVAL ARCHITECTURE} A powerful, strongly built boat with shaped hull and bow, designed to tow or push other vessels or barges in harbors, on inland waterways, and at sea.
随便看	gravitational systems of units gravitational tide gravitational water gravitational wave gravitino gravitoelectric field gravitomagnetic field gravitometer graviton gravitropism gravity gravity anomaly gravity bar gravity bed gravity cell gravity chute gravity classification gravity-collapse structure gravity concentration gravity conveyor gravity corer gravity dam gravity drainage gravity drainage reservoir gravity erosion

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