That's the first derivative of the position versus time.
它就是位置，对时间的一阶导数。
And so we're going to take the derivative versus time of this equation.
我们要求这个，方程的时间导数。
The curve of reaction conversion of LIPN formation versus time was determined by chemical method;
用化学法测定了LIPN生成反映的转化率-时间曲线；
And so I can substitute that in there, and so I get that the power is the derivative of this versus time.
所以我可以代入这里，得到那个功率，是相对时间的衍生物。
A graph of average speeds versus time can give the acceleration due to gravity of the falling object.
平均速度——时间图表可以给出这个自由落体的重力加速度。
What they all have in common is that the shape of the waveform (level versus time) is the main feature of interest.
用户对其感兴趣的是他们的共同点，即波形形状(电平随时间的波形)。
The desulfurization rate can be obtained in automatic record of electrical conductivity of the solution versus time curve.
自动记录该硫酸溶液电导率——时间曲线，可得到硫化物氧化脱硫速率。
Results showed that J/J(?) versus time curves of the evolution of hydrogen for both plate and cylindrcal specimens were similar.
结果表明：片状与棒状试样的衰减曲线具有完全相同的规律。
This information can be used to determine how much time is spent in the various Search services versus time spent in the Batch Report service.
此信息可用于确定在各种Search服务中花费了多少时间以及在BatchReport Service中花费了多少时间。
To use the drilled coal core site desorption data can get a drop-down curve of abandoned mine methane emission rate versus time approximately.
用钻孔煤心现场解吸数据可以近似得到废弃矿井甲烷涌出速度对时间的下降曲线。
The high pressure turbine tip clearance variation versus time under different operating conditions were analyzed by the finite element method.
利用有限元分析软件分析了某型高压涡轮叶顶间隙在不同工况下随时间的变化。
The results reveal different rules about bubble radius versus time and radial speed versus time because of different hypothesis in water state.
由于假设水具有不同的状态，求解得出了气泡半径及径向速度随时间变化的规律。
To integrate the curve of abandoned mine methane emission rate versus time to infinity against time, can get abandoned mine CBM resources at the time of estimating.
对废弃矿井甲烷涌出速度对时间的曲线按时间积分到无穷大，可以得到计算时刻的废弃矿井资源量。
The back-calculated results are further used to predict the settlement versus time curves under the embankment centerline which coincides well with those measured in field.
运用这一成果，预测路堤中线下地基固结沉降历时曲线与实测沉降曲线很好吻合。
In contrast, 8-psk modulation implements a linear mode in which a time-varying amplitude is output from the pa as measured by power versus time during the useful part of the burst.
与此相反的是，8 - PS K调制方式实现线性模式，其中在脉冲串的有用部分期间，功率放大器发射的功率幅度随着时间而变化。
In patients with hypertension, the plasma drug concentration and blood pressure versus time curves mirrored each other, indicating a close relationship between concentration and effect.
在高血压患者中，药物血浆浓度与血压-时间曲线相互对应，这表明药物浓度与降压疗效之间密切相关。
In this paper, a linear function of bearing variation versus time is given, and the method of work-point drifting are used to solve filter system which is unstable in bearing small change.
给出了一个形式简洁的方位随时间线性变化的可量测函数，并利用工作点漂移的技术解决了滤波器在方位小变化量时系统的不稳定现象。
The wave force on the steel-pipe pile which was connected and unconnected to the test platform was tested; and the acceleration versus time data and natural vibration frequency were obtained.
对波流力作用下连接及未连接平台的钢管桩进行了测试，获得了加速度时程曲线以及钢管桩固有频率。
GMSK schemes typically transmit in a saturated mode in which transmitted data is output from the pa with a constant amplitude as measured by power versus time during the useful part of the burst.
GMSK方案一般在饱和模式下进行发射，其中在脉冲串的有用部分期间，功率放大器以功率幅度不随时间变化的方式发送数据。
Last time, we argued about the case of Queen versus Dudley and Stevens, the lifeboat case, the case of cannibalism at sea.
上次，我们讨论了奎恩诉达德利和斯蒂芬斯案，即救生艇的案例，海上食人惨案。
Rotating 16 birds through the positions in a four-duck row, the researchers found outer birds half-asleep during some 32 percent of dozing time versus about 12 percent for birds in internal spots.
研究人员把16只鸟按顺序4只排成一排，发现外面的鸟在32%的时间里处于半睡眠状态，而内部的鸟只有12%的时间处于半睡眠状态。
Schedule the time. As you sit down and think about your life and what you want to do, versus what you actually do, you will be looking at ways to free up time.
合理安排时间坐下来想想你真正想做的事情，再对照下你现在在做的事情，找找到能节省你时间的方法。
Another reason to use story points versus units of time is that the ideal time from one person to another can vary.
使用描述点而不是时间单位的另一个原因是，对于不同的人来说，所需的时间是不同的。
Set benchmarks, comparing expected time versus actual time for a specific number of tests.
设置基准，以对比特定数量的测试的期望的时间和实际的时间。
I would prefer taking more time initially versus setting the adapter to a setting that might cause slower speeds as a result of poorly configured switches.
我宁愿在开始的时候花费更多的时间，而不是因为糟糕的交换机配置而对适配器进行相应的设置，从而导致较低的速率。
This workshop is mostly small group work and this time I experimented with smaller sized groups - 6 participants versus 8-10.
这个工作坊的工作基本上由小团队完成。这次，我尝试使用了更小规模的团队—6个参赛者对阵8到10个。
The tradeoff between these two strategies often comes down to a simple question of time versus money--which is the critical path for you in terms of reaching "big" status.
两种模式的权衡通常可以归结为一个简单的资金和时间的问题，也就是说为了实现目标，哪种模式更适合你。
Consider carefully how much time and data you can afford to lose versus how much you pay to make sure nothing is lost.
应该权衡考虑您能够承受的时间和数据损失与确保避免损失所需的代价。
This is almost a 75% reduction in execution time: 120 ns versus 400 ns.
在执行时间上减少约75%，即现在用130纳秒，从前用400纳秒。
These dichotomies (between efficiency versus correctness, efficiency versus programmer time, efficiency versus high-level, et cetera.) are bogus.
这些二分法（效率VS正确性，效率VS编程时间，效率VS高级）并不存在。
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