in series

串联电路的;成串联的

in power, in practice, in private, in proportion (to), in proportion to, in public, in pursuit of, in quantity, in question, in reality, in regard to, in relation to, in respect that, in return, in return for, in school, in search of, in season, in secret, in sequence, in session, in shape, in short, in sight, in situ, in so far as, in some respects, in some ways, in spite of, in step, in stock, in succession, in such a way as to do, in sum, in support of, in tears, in terms of, in that, in the air, in the case of,