调查了燃烧条件对燃尽时间和最大燃烧速率的影响。

The effect of combustion conditions on burning-out time and maximum burning rate is researched.

youdao

随着感染时间的不断延长，活性氧的产生速率逐渐降低，同时光合作用逐渐减弱。

With lastingness of infection, the productive rate of reactive oxygen species decreased gradually, and photosynthesis also weakened.

youdao

之后研究人员通过沙尘样本找寻到其对应来源地，并计算这些沙尘随时间积聚的速率。

They then linked each sample with its likely source region and calculated the rate of dust deposition over time.

youdao

This is the starting speed, that's the rate at which it is gaining velocity, and that's how long it's been gaining it.

这是起始时的速度,这是速度的增长速率,这是加速的时间

耶鲁公开课 - 基础物理课程节选

Some will be growing very rapidly, some will be growing less rapidly, and what this equation shows you here or that rate of growth the to the doubling time of cells.

有些会生长得更快些,有的慢一些,而这个方程告诉你,即生长的速率和细胞倍增的时间联系起来

耶鲁公开课 - 生物医学工程探索课程节选