D-c block
[电] 直流闭塞
🧩 词语组成解析
block
[blɑk]
n. 块;街区;<英>大楼，大厦;障碍物，阻碍;
vt. 阻止;阻塞;限制;
🗣️ 情景例句
part of the building for younger people.
另一部分给年轻人用。
That street is only two miles long.
那条街仅仅是2英里长的。
Some devices were quite simple.
有些装置非常简单。