Target function, design variables, nature state restrains, Optimize methods are studied.分析了高土石坝优化设计的目标函数 、 设计变量 、 约束条件及优化方法.Its enlargement factor arrives to 160,000 because it restrains noise effectively.由于选频滤波放大电路对噪声的有...
It was survivals of the mediaeval sanctuaries.它是中世纪庇护所的遗风.This dissertation is a special research on the mediaeval history of the Chinese dialectology.“颜师古注引方俗语研究”是汉语方言学史中古阶段的专题研究.Chaucer wrote in the late mediaeval peri...