Downcomer backup
[化] 降液管液柱高度
🧩 词语组成解析
n. 下水管, 下导管
backup
['bækˌʌp]
n. 支持，后援;阻塞;<计>备份文件;[乐]伴奏;
adj. 备用的，后补的;支持性的;伴奏的;
🗣️ 情景例句
Yes, I'm quite satisfied. That would be more than I have expected.
我很满意，比我期望的要多。
He is good at reading and writing, but he wishes he knew how to understand and speak better.
他的阅读和写作是强项，但他希望知道怎样去理解和说得更好。
Mr Green is from England.
格林先生从英国来。