Leval indicator
[电] 位准指示器
🧩 词语组成解析
[人名] 勒瓦尔
indicator
['ɪndɪketɚ]
n. 指示器;[化]指示剂;指示者;
🗣️ 情景例句
Please keep two for us to pick up.
请给我保留两张。
What's the rate for a station wagon?
租一辆客货两用轿车要多少钱？
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。