occultation
n. 掩蔽；掩星现象
近义词：disappearance，eclipse，
英英释义
Noun
- one celestial body obscures another
例句
用作名词(n.)
- The noise occultation was significant, and the undertone was the easiest one to be occulted.噪音对信号的掩蔽作用显著，其中低音最易被掩蔽。