单词	pi bond
释义	pi bond noun : a chemical bond between atoms in a molecule having overlapping p orbitals Word History Etymology pi perhaps after p orbital First Known Use 1947, in the meaning defined above
随便看	covalent covalent bond covalently Covareca covarecas covariance covariances covariant covariants covariate covariation covariations covaried Covarrubias covary covarying cove cove ceiling cove lighting coved coved vault covelline covellines covellite covellites

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