同时，得出岩石试件蠕变稳定性的判别准则和蠕变变形、蠕变速率和蠕变加速度的解析表达式。
Meantime, the creep stability criteria of rock sample, analytic expressions of the creep deformation, the creep speed and the creep acceleration are given.
速度的符号已经，由负变正了，可是加速度又还是正的。
It has changed from a minus sign to a plus sign because of this positive acceleration.
通过运动学分析，得出平面变胞机构在一个运动周期中输出杆件的位置、速度和加速度以及平面变胞机构的其他杆件的运动学参数。
Through the kinematic analysis, the positions, speeds and accelerations of the output link as well as the other links of the planar metamorphic mechanisms can be obtained.
因此，本文采用了变结构控制理论设计倾斜角稳定系统，采用了模型跟踪变结构控制理论设计俯仰、偏航通道的加速度稳定回路。
So, variable structure control theory is used in Angle stabilization of roll, and model - following variable structure control theory is used in acceleration stabilization of pitch and yaw.
目前对此问题的解决方法是：在终点处使加速度产生跳变或延长定位时间，而这恰恰影响了数控系统的高速、高精度。
There are some methods to solve the problem, such as making acceleration jumped, delaying orientation time at end-point, these methods affect high-speed and high-accuracy of CNC system exactly.
目前对此问题的解决方法是：在终点处使加速度产生跳变或延长定位时间，而这恰恰影响了数控系统的高速、高精度。
There are some methods to solve the problem, such as making acceleration jumped, delaying orientation time at end-point, these methods affect high-speed and high-accuracy of CNC system exactly.
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