这可能是长达2.5亿年的火山活动间歇所引发的，那意味着更少的二氧化碳被排放到大气中，温室效应也降低了。
This may have been triggered by a 250-million-year lull in volcanic activity, which would have meant less carbon dioxide being pumped into the atmosphere, and a reduced greenhouse effect.
他们可以产生“球阀”效应，引起房室瓣口间歇性关闭。
They can produce a "ball valve" effect by intermittently occluding the atrioventricular valve orifice.
对无回流间歇曝气系统在沉淀期间进水的可行性和进水效应进行了研究。
A study was made of the feasibility and effect of feeding during settlement in non-backflow intermittent aeration system (NBIAS).
应用文献资料法，对当今国际主要的模拟高原训练的方法—间歇训练法和高住低训法的生物学效应和所用器材进行了归纳和探讨。
Based on collecting recent documents, this paper discusses the biologic effect and equipment of simulative High - altitude training methods that include IHT and HiLo.
利用间歇式完全混合厌氧生物反应器对硫酸盐生物还原体系的温度效应进行了研究。
Effect of temperature on biological sulfate reduction system was studied by mixing intermittent biological reactor.
利用间歇式完全混合厌氧生物反应器对硫酸盐生物还原体系的温度效应进行了研究。
Effect of temperature on biological sulfate reduction system was studied by mixing intermittent biological reactor.
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