| 1. | We say that the real number system is a continuum .
我们讲，实数系是一个连续集。 |
| 2. | The question of the logical structure of the real number system was faced squarely .
实数系的逻辑结构问题被正视。 |
| 3. | The basic prerequisite for reading this book is a familiarity with the real number system .
阅读本书必须熟悉实数系。 |
| 4. | The unknowns in the above equation are referred to the local numbering system .
上述方程中，未知数是属于局部编号系统的。 |
| 5. | The sexagesimal scale, or number system based on 60, was used by ancient babylonians .
古巴比伦人用六十进位制，即以60为基的数系。 |
| 6. | It is occasionally necessary to use a number system to designate the position of each ligand .
有时需要用一种编号系统来标明各配体的位置。 |
| 7. | The need for a logical foundation of the number system was aggravated by the alexandrian's free use of numbers .
由于亚历山大人随意使用数，所以对于数系的逻辑基础就更加显得迫切需要。 |
| 8. | Copper and copper alloys . european numbering system
铜和铜合金.欧洲材料编号制度 |
| 9. | The essence and method of conversion between number systems
数制转换的本质和方法 |
| 10. | Copper and copper alloys - european numbering system
铜和铜合金.欧洲牌号系统 |
