technology——the study and use of science for practical purposes in industry,etc科技/技术的研究及应用；the scientific knowledge that is needed for a particular industry,etc科技；技术
technique——a particular way of doing sth工艺；技巧;your practical ability in sth技能；技术；技巧
skill—— the ability to do something well,usually as a result of experience and training技能,熟练,巧妙; a particular ability that involves special training and experience技巧,手艺,（专门）技术
technology指科学、科技,用在概括性的学科、技术描述上,如information technology 信息技术.
technique指工艺、技巧,用在某项特指的工艺的描述上,如porcelain making technique 造瓷工艺
skill指的是人具有的技术能力,如english skill 英语技能,skilled man技术熟练的人