Catalyst promoter
[化] 助催化剂
🧩 词语组成解析
promoter
[prə'məutə]
n. 助长者;发起人;促进者;
🗣️ 情景例句
Uh-oh.
啊哈。
And our successful techniques, and to speak about our failures.
和成功技巧，并讲出我们的失败之处。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。