sparse adj. 1.(樹木分布等)稀的;(交通車輛等)稀疏的。 2.(人口、毛發(fā)等)稀少的。 3.(雨量)稀缺的;瘦小的。 sparse beard 稀疏的胡須。 a country of sparse population 人口稀少的小國。 n. -sity ,-ly adv.,-ness n.
Is a string type that can be used in arithmetic and also as a keyed map or indexed optionally sparse array 是一個(gè)字符串類型,可以用在算術(shù)運(yùn)算中,也可以作為鍵映射( keyed map )或索引(可選情況下索引可以分散)數(shù)組。
Then , pattern synthesis for sparse array antenna using genetic algorithms is researched . at last , we researched on conformal patch on the surface of cylinder and the effect of conformal antenna platform on the radiations of patches in different positions . how to get a good feeding for conformal array antenna by genetic algorithms is presented in the end 文中介紹了遺傳算法在綜合低副瓣陣列中的應(yīng)用;采用遺傳算法給陣列天線的方向圖賦形,其結(jié)果優(yōu)于同種條件下用woodward法得到的結(jié)果;同時(shí),考察了遺傳算法的穩(wěn)定性;分析討論了遺傳算法在綜合稀疏相控陣方向圖綜合中的應(yīng)用。