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
Welcome aboard, Malcolm!
欢迎加入， Malcolm
He won't be distressed by my absence.
即使我不在，他也不会悲伤痛苦的。
The ideal to be aimed at was to devise an instrument that could record with a pen on paper,
当地震发生时，它能用笔在纸上记录下