butt set

基本解释

The paper introduced a PLC network (MELSECNET/MINI)control system which is used for controlling flash butt welding machine set.
采用可编程控制器（PLC）的联网功能，构成一个MELSECNET／MINI网络，用于控制闪光对焊机组。
It was a familiar tragedy: opportunists rushed in to siphon fuel off a leaking oil pipeline and then a cigarette butt or match set off the explosion.
事发经过似曾相识：当时一根输油管道发生了渗漏，想捡便宜的人们冲过去捞取，而那个时候有人丢弃了烟头或者火柴从而引发了爆炸。
Butt the Southern States wanted to set up a country of their own, where they would be free to keep black slaves.
但是南方各州却想建立他们自己的国家，以便在那里他们可以随心所欲地继续把黑人当作奴隶。。