The storage temperature was an important factor affecting the pollen life span.
贮藏温度是影响蜡梅花粉寿命的重要因素。
Overrunning Speed Clutch is one of the key pats in impulseStepless Speed Regulators, and working capability depends on the control factor of its mechanism efficiency, twist moment and life - span.
超越离合器系脉动无级变速器的关键部件，其工作能力决定了整机效率的高低、输出扭矩的大小和耐用寿命的长短。
The increase in life span around the world has been a major factor in increasing the population.
全球范围内人口寿命的增长是人口巨增的主要原因。
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