split-second operating lever双: two; twin; both; dual秒针: second hand活动: move about; exercise杆: shaft; rod; bar双秒针活动杆钩: split-second operating lever hook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:双秒针活动杆，即可在微信中查询翻译
