n.(名词)

1. 反斜线符号
2. 挑顶
3. 反斜线
4. 后斜线

backbarn.支承梁；托梁backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的backflow preventers倒流防止器backing-off angle后角backcrossing scheme回交方案back cylinder cover后缸盖back ampere-turns反安匝backing-off model回退法backlighting system背光组件back-channel item反馈项backtround impurity本底杂质backflow technology回流技术

1. Is that symbol a slash or a backslash?
   那个符号是斜线还是反斜线？