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做网络营销的人，我们要知道以下常见名词解释： CPC (Cost Per Click): 按点击计费 CPA (Cost Per Action): 按成果数计费 CPM (Cost Per Mille): 按千次展现计费 CVR (Click Value Rate): 转化率，衡量CPA广告效果的指标 （点击/下单） CTR (Click Through Rate): 点击率 （点击/曝光(展现)-> 曝光区别于请求，请求不一定会有曝光） PV (Page View): 流量 ADPV (Advertisement Page View): 载有广告的pageview流量 ADimp (ADimpression): 单个广告的展示次数 PV单价: 每PV的收入，衡量页面流量变现能力的指标 RPS (Revenue Per Search): 每搜索产生的收入，衡量搜索结果变现能力指标 　 ROI： 投资回报率（ROI）是指通过投资而应返回的价值，它涵盖了企业的获利目标。利润和投入的经营所必备的财产相关，因为管理人员必须通过投资和现有财产获得利润。又称会计收益率、投资利润率。 来源： oschina 链接： https://my.oschina.net/u/1439326/blog/541400

Audio Terminology IN THIS DOCUMENT Generic Terms Digital Audio Hardware and Accessories Audio Signal Path Android-Specific Terms Sample Rate Conversion This document provides a glossary of audio-related terminology, including a list of widely used, generic terms and a list of terms that are specific to Android. Generic Terms These are audio terms that are widely used, with their conventional meanings. Digital Audio acoustics The study of the mechanical properties of sound, for example how the physical placement of transducers such as speakers and microphones on a device affects perceived audio