Magnaglo
電磁紫外線探傷法, 瑪格納絡磁性粉末
??? 情景例句
Oh!
噢！
You won't regret it.
你不會后悔的。
This is No. 1 Machine Shop. Keep together, please! said Uncle Wang.
“這就是第一機械車間。 請大家靠攏點！”王大叔說。