The kinematics of free electrons is described by the free Dirac equation, a four-dimensional system of partial differential equations.
自由电子的运动学由自由狄拉克方程——一个四维系统的偏微微分方程描述。
A linear state feedback controller is designed for controlling a four-dimensional chaotic system by the inverse optimal controlling approach.
采用逆最优控制方法为一种四维混沌系统设计了一个线性状态反馈控制器。
Furthermore, the conventional observations are done in the MM5 model system, and a four-dimensional variational data assimilation test is made based on observed data.
最后对MM5伴随模式系统进行了梯度检验，并利用实际资料进行四维变分资料同化试验。
The work roll adjustment control industrial test of aluminium foil four-high mill roll system gyroscopic effect micro dimensional dynamic cross is being preceded.
铝箔四辊轧机辊系陀螺效应动交叉微尺度行为的工作辊定位控制还在工业试验中。
It takes approximately four revolutions of Earth around her sun for your solar system to make one revolution around your twelfth-dimensional sun.
地球围绕着太阳转四圈，大约等于你们的太阳系围绕第十二维太阳转一圈。
When the match between the unemployed and the vacant positions is efficient, the economic system described by a four-dimensional differential equation system has a stable two-dimensional manifold.
当失业工人和空闲职位的匹配是有效时，表示经济系统的四维动力系统存在一个稳定的二维流形。
If my life were expressed as a function in a four-dimensional Cartesian coordinate system.
假设我的生命用一个建立在四维直角坐标系里的方程来表示的话。
The micro gyro three-dimensional track and localization includes four stages, such as triggering system, acquiring data, enlarging and changing signal, storing and keeping data.
微陀螺三维跟踪定位，通过系统触发、采集数据、放大转换和存储保持四个阶段完成。
This lidar system allows three-dimensional measurements by using a steering unit, and can measure four kinds of pollutants in atmosphereaerosol, SO 2, NO 2, and O 3.
该雷达系统能监测四种大气污染物，即大气气溶胶、二氧化硫、二氧化氮和臭氧。
This lidar system allows three-dimensional measurements by using a steering unit, and can measure four kinds of pollutants in atmosphereaerosol, SO 2, NO 2, and O 3.
该雷达系统能监测四种大气污染物，即大气气溶胶、二氧化硫、二氧化氮和臭氧。
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