短語(yǔ)詞組短語(yǔ)ttff time to first fix 首次定位時(shí)間the time to first fix 首次定位時(shí)間;定位時(shí)間;次定位時(shí)間- time to first fix 首次定位時(shí)間Time to First Fix F 首次定位時(shí)間;一秒的首次定位時(shí)間;包括一秒的首次定位時(shí)間Time -to-first-fix Test 熱啟動(dòng)到首次定位測(cè)試 返回 time to first fix