The upper metal nanocrystals as an additional charge trap layer enable the direct tunneling mechanism to enhance the flat voltage shift and prolong the retention time.

说明顶层的金属纳米晶作为一层额外的电荷俘获层可以通过直接隧穿机制进一步延长保留时间和提高平带电压漂移量。

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Objective To find out the advantages of large saphenous vein as the puncture site for venous retention when compared with other sites on caesarean section of direct rooming - in.

目的通过对母婴同室剖宫产产妇静脉留置针穿刺不同部位的比较和分析，获得母婴同室中剖宫产产妇行下肢大隐静脉留置针穿刺的优点。

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The purpose of this study is to examine the effect of context on the direct learning of L2 vocabulary, with the retention of word meaning and form as the main focus.

本研究的目的是了解上下文在二语词汇直接学习中的作用问题。

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Even if the employees' performance and career potential are unexceptional, their institutional knowledge, direct relationships, or technical expertise can make their retention critical.

FORBES: Retaining Key Employees In Times Of Change

Direct mail also scored the highest among B2C marketers for customer contact and retention.

FORBES: How The USPS Decision To Stop Saturday Mail Delivery Will Affect Marketers