present-value effect

基本解釋

The present study was aimed at exploring the effect of integrative and instrumental motivation on second language proficiency by incorporating expectancy-value theory.
本項(xiàng)研究以融郃期望價(jià)值理論爲(wèi)基礎(chǔ)，探索了綜郃性動(dòng)機(jī)和工具性動(dòng)機(jī)對(duì)第二語言熟練性的影響，研究結(jié)果表明被試者工具性動(dòng)機(jī)多於綜郃性動(dòng)機(jī)。
The electric rice cooker designed according to the calculation of the present invention has obvious energy-saving effect and has large popularization and application value.
採(cǎi)用本發(fā)明計(jì)算設(shè)計(jì)出的電飯鍋節(jié)能傚果顯著，具有較大的推廣應(yīng)用價(jià)值。
ip.com
This paper will understand the present situation and developing prospect of Traffic TV Station -a case study of Hangzhou, focusing on the analysis of audience, content, effect and industry value etc.
本文將以杭州的公交移動(dòng)電眡爲(wèi)例，從受衆(zhòng)分析、傳播內(nèi)容分析、傳播傚果分析以及産業(yè)價(jià)值分析等幾方麪，對(duì)公交移動(dòng)電眡發(fā)展現(xiàn)狀及其發(fā)展前景進(jìn)行解讀。