Wall bushing
[电] 穿壁套管
🧩 词语组成解析
n. 轴衬, 套管\\n[化] 衬套; 管衬; 轴瓦
🗣️ 情景例句
He is as poor as a church mouse.
他一贫如洗。
She began playing the violin when she was nine.
九岁的时候，她开始拉小提琴。
Hello!
你好！