英语词汇“backsight”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	backsight
释义	WordReference Random House Unabridged Dictionary of American English © 2024 back•sight (bak′sīt′),USA pronunciation n. [Survey.] Surveyinga sight on a previously occupied instrument station. Surveying(in leveling) the reading on a rod that is held on a point of known elevation, used in computing the elevation of the instrument. back² + sight 1840–50
随便看	ethyl butyrate ethyl caproate ethyl carbamate ethyl cellulose ethyl chloride ethyldichloroarsine ethyl enanthate ethylenation ethylene ethylene alcohol ethylenediaminetetraacetic acid ethylene dibromide ethylene dichloride ethylene glycol ethylene group ethylene oxide ethylene series ethyl ether ethyl group ethyl hexoate ethylic ethyl malonate ethyl mercaptan ethyl nitrate ethyl nitrite

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