词汇	richard jefferson
释义	richard jefferson 理查德·杰弗森
随便看	Variable rate spray variable-rate spray Variable-rate spray Variable rate spraying variable-rate spraying variable rate spraying technology variable rate spring variable-rate spring variable-rate sprinkler variable rate stock variable-rate suspension variable rate technology Variable rate water application variableratio variable ratio variable-ratio variable ratio combiner variable-ratio control variable ratio divider variable-ratio epicyclic gear variable ratio frequency changer variable-ratio gearing variable ratio of guidance variable ratio of modal strain variable-ratio pantograph