R-f plumbing
[电] 射频垂铅
🧩 词语组成解析
plumbing
['plʌmiŋ]
n. 水管装置;水暖工的工作;管道工程;
v. 用铅锤测量（plumb的现在分词）;探究;
🗣️ 情景例句
Just the regular.
平信就好了。
Prompt delivery would be necessary as we have a fast turnover in this trade. We would therefore need your assurance that you could meet all delivery dates.
即期交货很重要，因为这种货流转很快。所以我们需要你方保证及时交货。
Charlie chaplin, who died in 1977, is considered one of the greatest and funniest actors in the history of the cinema.
查理·卓别林于1977年去世，他被认为是电影史上最伟大、最滑稽的演员之一。