Use of subheadings in subject indexing of medical literature;
医学文献主题标引中副主题词使用问题分析
Parts transfer from main spindle to counter spindle without shutting down.
副主轴是双主轴车削中心的一个关键部件,工件能在不停车状态下自动实现主轴和副主轴的对接转移,两个主轴也可以作为独立的加工单元同时加工。
Finally, several group of chaotic binary-phased codes which have the optimum ratio of sidelobe to mainlobe are screened out by performing the operation of self-correlation.
并用MATLAB编制的程序获取均匀分布的混沌序列,经自相关运算后从中筛选出若干组具有最佳副主瓣比的混沌二相码。