So if we wanna know the rate of change of neutrons as a function of time we will write this expression.
所以，当我们想要知道中子的变动率，那是时间方程，我们会写下这个表达式。
Remember angular velocity is just the rate of the change of the angle over time.
角速度,是角度随时间改变的快慢。
How else are you going to calculate how much your parts costs have gone up, or automatically give a limited-time discount to a valued customer, or calculate the effect of a retroactive rate change?
要不您如何计算零部件成本增长了多少，或者自动向有价值的客户提供限时折扣，或者计算追溯费用变更的影响？
With the probe to change the production mode, saving a lot of auxiliary time, scrap rate reduction! Easy to use, small batch processing in order to change faster.
用测头改变生产模式，节省了大量的辅助时间，报废率降低！使用方便，小批量加工换序能够更快。
Speed is the rate between the change of distance and time.
速度是距离的改变与时间之间的比率。
Generally we considered the affection elements of the temperature test results, is the temperature, holding time, temperature change rate and so on.
通常认为，影响温度试验效果的要素有温度、停留时间、温变率等。
We estimated the time at which the rate of decline begins to accelerate (the change point), and the pre - and post-acceleration rates of decline, from the longitudinal data using a change point model.
利用改变点模型从纵向数据中找出加速点、前加速期下降速率和后加速期下降速率。
The results show that the weldments made from those metals in as-welded condition are instable in dimension and the rate of dimensional change decreases with time.
结果表明：七种材料的焊件都存在着尺寸不稳定，这种尺寸不稳定变形随时间的变化速率逐渐变缓；
Cement additives are used to change the cement's density, setting time, compressive strength, flow properties and dehydration rate, to cause the cement to expand, and to reduce the cost of the cement.
水泥添加剂用来改变水泥的密度、凝固时间、抗压强度、流动性能和脱水率，并用来使水泥膨胀以及降低水泥成本。
The rate of change in business has been going up for some time now.
变化的速率的业务已经持续了一段时间了。
There was significant difference among wheat varieties in change rate of dough sheet color over time.
鲜面片色泽随时间的变化在不同小麦品种间存在明显的差异。
Used to animate the Noise texture. You can keyframe the Time attribute to control the rate and amount of change of the texture.
惯常动画这杂色纹理。你可以设定关键帧来控制纹理比率和数目。
Collecting the traffic congestion tolls change the road-users choosing the roads and time so that it increases the rate of road use and saves the traffic time.
通过道路拥挤收费改变了出行者对道路使用、出行时间的选择，使得道路的使用效率提高，节省了交通时间。
On the basis of relationship between bolt axial stress and rate of change in ultrasonic wave transmission time, the author has developed a device to directly measure axial stress in bolts.
根据螺栓的轴向应力与超声波传播时间变化率的关系，作者研究了一种可直接测量螺栓轴向应力的仪器。
ACCELERATION, The rate of change in velocity with respect to time.
加速度，随时间变化的速度改变率。
By acceleration is meant the rate of change of velocity with time.
加速度指的是速度随时间的变化率。
Reaction rate is measured by the change in concentration of a reactant or product per unit time.
反应速率是指单位时间里反应物或生成物浓度的变化。
The node axial force and radial force decreased with the time increased and the change rate of the node stress at the center was less than that at the circumference.
节点轴向力、径向力均随时间的增加而减小，而且节点应力变化速率在中心区域小于圆周处。
Based on the MPEG-4 video traffic of low quality and high quality, a hybrid model is presented to capture the frame size at multiple time scales: the change of scene and fluctuation of bit-rate.
针对MPEG - 4的低质量和高质量两种编码质量的视频源，给出了一种混合模型，此模型在多个时间尺度上反映帧大小的变化：场景的变化和同一场景内码流的波动。
The research results show that:Two different kinds of wastewater shows the same change law, COD remove rate in wastewater presents increasing tendency with the prolonging of reaction time in reactor.
研究结果表明：两种不同的水质呈现出相同的变化规律，反应器中废水COD的去除率均随反应时间的延长而呈递增趋势。
The current status of one point, such as pressure, flow rate and flow don t change with time, intitules as the steady flow.
一个点上的水流状态，如压力、流速和流量不随时间变化而变化，称为恒定流。
The common algorithm of SCR digital trigger, however, was not satisfying on response time, change rate of firing Angle and stability.
一般的晶闸管数字触发器算法存在着响应时间长、触发角不可大幅变化和可靠性差等不足。
The rate of change with respect to time of the mass contained within a given region.
包含在给定区域的质量随时间的变化率。
The induced net minus energy of a closed universe equals the density rate of the second time change multiplying a constant.
闭合宇宙感应的净负能量与能量密度的两阶导数变化量成正比。
The time-dependent change of leakage rate and radial force of interface was analyzed.
研究了泄漏率、耦合面径向力随时间的变化情况；
The impact on different stages of the same stock market of the exchange rate change is different too at the same time.
同时汇率变动对同一股市的不同阶段影响也大不一样。
The rate of change of velocity with respect to time.
这样波浪感就会在加快速度时消失。
The rate of change of velocity with respect to time.
这样波浪感就会在加快速度时消失。
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