Since its discovery in l946, NMR has become a valuabIe tool in physics, chemistry, bi-ology, and medicine. With the inve......

介绍了近年国际上压电型精密驱动器的典型结构、工作原理和特点.在此基础上,提出一种新颖的以压电叠堆为驱动元件的整体对称结构的......