transition of double-sockettransitionofdouble-socket双: two; twin; both; dual承: bear; hold; carry大小: big or small头: 5点就得动身 have to start before ...双承大小头管节: transition of double-socket下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:双承大小头，即可在微信中查询翻译
