| 1. | The trough is the lowest level of the cycle .
谷底是整个周期的最低点。 |
| 2. | This negative pressure phase is of short duration .
负压周期的延续时间很短。 |
| 3. | Such readings can reveal longer－period deformations in the earth .
这种读数可以反映地球长周期的形变。 |
| 4. | Lactation is the final phase of the reproductive cycle of mammals .
泌乳是哺乳动物繁殖周期的最后阶段。 |
| 5. | The third "l" shows that the series is leading all turns of the business cycle .
第三个安母“L”表明这个数列领先于周期的高峰。 |
| 6. | The motion is periodic, which means it occurs identically over and over again .
这个运动是周期的，意即运动以同样的形式重复出现。 |
| 7. | Another kind of period variation, "glitches," are seen in several pulsars .
在几个脉冲星中还看到了周期的另一种变化，即“自转突快”现象。 |
| 8. | Equation(4) permits a simple deduction of the relation between the phase velocity and the period .
用方程（4）可简单推导相速度和周期的关系。 |
| 9. | In vitro analysis must be complemented by studies of the virus replication cycle in plants .
体外的分析必须辅之以植物体内病毒复制周期的研究。 |
| 10. | Inflation, unemployment, on both i.e. stagflation, are manifestations of business cycles .
通货膨胀，失业或者二者并存，即滞胀是商业周期的表现。 |
