efficient adj. 1.有效的,有力的;效率高的。 2.有实力的;有能力的,有本领的;能胜任的。 efficient cause 【哲学】动因。 adv. -ly
extraction n. 1.抽出,拔出。 2.【化学】提取(法);萃取(法);回收物,提出物;精炼。 3.精选,摘要。 4.血统,家世,出身。 5.【数学】开方,求根。 spirit of the first extraction 原汁酒。 a man of foreign extraction 外国(血统的)人。 extractions from a book 一本书的内容摘录。 an extraction of 81 percent 百分之八十一的出粉率,八一粉。 the extraction of root 【数学】开方法,求根法。
Along with the widely using of remote sensing technology in civil and military fields , such as resource reconnoitering , the gps , recognition of airports and naval ports , the efficient extraction and recognition of the remote sensing image objects has been attached great importance to , which is very important for the application of remote sensing images as well as for the development of remote sensing technology itself 随着遥感技术在资源勘探、全球定位系统等民用领域以及机场、港口目标识别等军事领域的广泛应用,对遥感影像目标的有效提取与识别手段逐渐受到了人们的重视,这对遥感影像的应用以及遥感技术本身的发展都很重要。