inner marker

原始詞典資料1 筆記錄

這個字我們還沒有寫成教學內容。以下是外部詞典記錄的用法，原文照列，方便你先看懂它的意思。

inner markernoun

1
aeronauticsaerospaceaviationA type of marker beacon placed to indicate when an aircraft crosses the runway threshold of a Category II or Category III ILS or IGS approach, triggering a continuous visual and aural sequence of rapid-fire Morse code dots from the marker beacon receiver in the cockpit of an aircraft flying over the marker.

資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。原文照列，未經改寫。