周期性地的英文

periodically

• 周期性:    periodicity; cycli ...
• 地:    the earth
• 定期地，周期性地:    périodiquement adv

例句与用法

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1. Booms run in cycle .
   景气状况周期性地出现。
2. 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。
3. 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。
4. Economic dislocations such as "the panic of 1837" occurred periodically during the 19th century .
   十九世纪曾周期性地发生象“一八三七年恐慌”那样的经济失调现象。
5. Periodically, the lamellae become enlarged, forming flattened, membrane-enclosed vesicles called thylakoids .
   片层周期性地扩展，形成扁平的有膜为界的囊，称为类囊体。