Dennis glanced toward the bar and saw a young woman freeze as she stepped out of the rest room, a horrified look on her face.
丹尼斯扫视了一下酒吧，看到一个年轻女子从厕所走出时僵立在那儿，满脸惊骇。
2
Based on theoretical analysis of stepped bending vibration boring bars, the frequency equation of a stepped bending vibration boring bar with circular and square sections is established.