请注意此处的加速度，是一个常数，不随时间变化而变化，不过速度是变化的。
So notice that the acceleration is constant in time, is not changing but the velocity is changing.
随着认识的不断深入，人们逐渐发现波动不随时间变化的假设是不尽合理的。
As the realization about the volatility, people know that the assumption of the volatility as a constant is improper.
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 current status of one point, such as pressure, flow rate and flow don t change with time, intitules as the steady flow.
除玄武岩和红砂岩发育红壤的某些层外，其他土壤各层的土壤渗漏量不随时间变化而变化。
Percolation at all levels of the four soils, except at certain levels of the red soils derived from basalt and red sandstone, does not change with the time.
当外加射频频率远大于离子等离子体频率，离子响应平均场，离子的密度分布几乎不随时间变化；
When the external RF frequency is much bigger than ion plasma frequency, ions answer average field.
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。
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.
尽管其暴露在外面的最表层可能改变，就如同冰山会因阳光和雨水而融化一样，但文化的根基则不随时间而发生太大变化。
While the visible tip may change-as an iceberg will melt with sun and rain-the base does not change very much over time.
URI版本控制 […]是一种设计决定，用于当资源不随时间的变迁而变化时，我们为状态的改变创建新资源（类似于管理数据库中的时间序列数据）。
URI versioning […] is a design choice when resources are immutable across time and we create new resources for state changes (similar to how we manage time-series data in a database).
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
稳定流动的意思是说流体流动状态不随时间而变化。
Steady flow means that the way in which the fluid moves does not change with time.
以及一LED驱动器，用以根据该控制讯号驱动该LED背光模块，以控制该LED背光模块产生的背光的色度实质上不随时间的变化而改变。
The LED driver driving the LED backlight module based on the control signal, so the chromaticity of the LED backlight module may be substantially constant over time.
结果表明，三种金属元素的浸出含量不随时间显著变化，放置过程中不会造成茶汤中含量的明显增加。
The results showed that amount of the 3 elements extracted in the tea infusion was not markedly changed with extraction time.
结果表明，三种金属元素的浸出含量不随时间显著变化，放置过程中不会造成茶汤中含量的明显增加。
The results showed that amount of the 3 elements extracted in the tea infusion was not markedly changed with extraction time.
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