周期性地 meaning in English
periodically
Examples
- Booms run in cycle .
景气状况周期性地出现。 - 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。 - 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。 - 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。 - 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。