logical record
| header
| logical record abbr. | |
| math. од. | 逻辑记录 |
| header abbr. | |
| construct. | 丁头砖 |
| IT | card首 卡 、标题卡片 |
| IT од. | 首部; 报头 |
| mech. | 集气管 |
| met. | 头部 |
| roll. | 顶锻机; 镦粗机 |
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| ★ 逻辑记录 | |||
|
logical record : 19 phrases in 5 subjects |
| Computers | 1 |
| Electronics | 8 |
| Information technology | 4 |
| Mathematics | 2 |
| Technology | 4 |