This paper give an advice that we can realize closed cycle control of feeding shaft by proportional valve and linear grid ruler instead of servo emplifier and servo motor.
利用比例阀和线性光栅尺配合使用替代伺服放大器和伺服电机实现进给轴的闭环控制。
A sample implementing method of a nonlinear grating device is proposed based on the diffractive theoretical study of nonlinear grating.
通过对"非线性光栅衍射"的理论研究,提出一种简单地实现"非线性光栅"器件的方法,即用矩形光栅与毛玻璃夹有机溶液的方法制作"非线性光栅"。
A case study on the factors of oasis-desert ecosystem evolution and its non-linear relationship in Xinjiang;
绿洲—荒漠生态系统演化因素及其非线性探讨——以新疆为例