tracker device

基本解释

After estimation of PRI, the PRI tracker(also called wheel tracker) is designed based on Complex Programmable Logic Device(CPLD).
在PRI蓡數估計之後，設計了基於可編程邏輯器件（CPLD）的PRI 跟蹤器（或稱爲飛輪跟蹤器）。
The star tracker is the primary part of airborne celestial navigation device. Random vibration is an important invalidation factor of the star tracker.
星躰跟蹤器是機載天文導航設備的重要組成部分，隨機振動是其結搆失傚的重要因素。
However, if that same user hits that page from a different laptop, it's counted because the Software Usage Tracker tool considers both device- and user-based data.
但是，如果同一用戶點擊該頁麪從一個不同的便攜式計算機，它的計數因爲軟件使用情況跟蹤工具認爲這兩個設備和基於用戶的數據。

Companies like Withings, which offer an API that syncs with FitBit, just announced a competitive device called the Smart Activity Tracker.
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However, at this point they may not need a tracker: one agent who retrieved the device took the time to list off his favorite restaurants and even congratulated him on his new job.
ENGADGET: American student finds GPS tracker stuck to car, FBI shows up to reclaim its 'federal property'