| 1. | Mount baker periodically heats up internally .
贝克山有周期性内部发热现象。 |
| 2. | Dynamic ram's need to be refreshed periodically .
动态RAM则需要周期性地刷新数据。 |
| 3. | Violent winds periodically drive clouds of dust around mars .
狂风间歇地席卷火星上的尘云。 |
| 4. | He drinks far more than she, and is periodically rebuked .
他喝酒比她厉害得多，为此，有时受到她的责怪。 |
| 5. | Inspectors periodically check wiring, heating plants and chimneys .
检查员定期检查电线系统，暖气设备和烟囱。 |
| 6. | A great many more periodically starve; many actually die of want .
还有很多人经常没有东西吃；不少人实际上死于贫困。 |
| 7. | The state of knowledge in this field has been surveyed periodically in review papers .
在一些评论文中对这一领域的动态周期性地进行了评述。 |
| 8. | A canister purge valve is opened periodically to vent the vapor back into induction system .
收集器的清除阀周期性地开启，泄放蒸气使之返回进气系统。 |
| 9. | Mortality is the number or volume of trees periodically rendered unusable through natural causes .
枯损是一类由于自然原因而定期变得无用的林木株数或材积。 |
| 10. | The simplest imposed conditions are those in which the loading is periodically and uniformly repeated .
最简单的加载情况是周期地、均匀而重复地施加的载荷。 |
