| 1. | For a time people may change their graphic symbols to conform with changes in pronunciation .
有时人们要改变书写符号来适应发音上的变化。 |
| 2. | General principles for the presentation of graphic symbols
图形符号确定的一般原则 |
| 3. | Supplement to graphic symbols for logic functions
逻辑功能用图形符号的补充件 |
| 4. | Graphic symbols for railroad maps and profiles
铁路线路图与示意图的图示符号 |
| 5. | Graphic symbols and safety marking in laboratories
实验室图形符号及安全标志 |
| 6. | Micrographics . graphic symbols used in micrographics
缩微照相.缩微照相应用的图形符号 |
| 7. | Power - driven vehicles ; graphic symbols for tachographs
机动车辆.自记式转速计用图形符号 |
| 8. | Cranes - graphic symbols - part 1 : general
起重机.几何符号.第1部分:总则 |
| 9. | Pneumatic tube conveyor systems - graphic symbols
风动管道系统.图形符号 |
| 10. | Shipbuilding - piping systems - graphic symbols
造船.管道系统.图形符号 |
