| 1. | There are two systems of units in common use in mechanics .
在力学中通用两种单位制。 |
| 2. | The need for a more uniform system of expression is evident .
显然需要有更加统一的单位制表方法。 |
| 3. | This system is called the international system of units, abbreviated si .
这种单位制叫国际单位制，缩写为SI。 |
| 4. | The relationship between stresses in the two systems can be found as follows .
两种单位制中应力之间的关系，可以求出如下。 |
| 5. | In producing a series such as this, a policy decision must be made about units .
编纂这样一套丛书，必须对采用的单位制作出原则规定。 |
| 6. | The unit of impulse, in any system, equals the product of the units of force and time in that system .
在任一单位制中，冲量的单位等于该单位制中力和时间单位的乘积。 |
| 7. | Employment of the undergraduates in a post - unit phase
后单位制时代的大学生就业 |
| 8. | Textiles . expression of linear density . tex system
纺织品.线性密度的表示方法.特单位制 |
| 9. | Attracted by the performers production
表演单位制作吸引 |
| 10. | This system is called the international system of units , abbreviated si
这种单位制叫国际单位制，缩写为si 。 |
