- The high gear ratio means the lower is the reduction between the engine and the road wheels. Conversely the lower the gear ratio means the greater is the reduction between the engine and road wheels. The top gearbox ratio is 1:1 when the gearbox input shaft connects directly with the gearbox output shaft; in this case, it calls direct drive. Example: - Most gearboxes have an over drive shift.
couplet - a stanza consisting of two successive lines of verse; usually rhymed. line of poetry, line of verse - a single line of words in a poem. closed couplet - a rhymed couplet that forms a complete syntactic unit. heroic couplet - a couplet consisting of two rhymed lines of iambic pentameter and written in an elevated style. stanza - a fixed number of lines of verse forming a unit of a poem.
2-line stanzas. A 2-line stanza is called a couplet. aa is a rhymed couplet; xx an unrhymed couplet. The French call rhymed couplets rimes plates or rimes suivies. 3-line stanzas. A 3-line stanza of any kind is called a tercet. aaa is a triplet. axa is pretty common, occurring in forms such as the villanelle and terza rima (where in both cases there are also rhymes between stanzas). The haiku is a species of tercet, and so are some varieties of englyn (though not the one featured on this site).