操作和维修说明 | |
avia. | operational and maintenance instruction |
书 | |
gen. | books; book; bookery |
econ. | letter |
environ. | book |
libr. | fore-edge painting; fore-edge title |
| |||
operational and maintenance instruction |
操作和维修说明 : 4 phrases in 3 subjects |
Aviation | 2 |
Economy | 1 |
Shipbuilding | 1 |