外围电子

目前，各种计算机，尤其是个人电脑及其外围电子设备大量采用标准USB接口，标准USB接口已经成为必须的接口之一。

At present , standard USB interface has been applied in computers , especially a large number of personal computers and peripheral electronic equipments .

为了有效地降低功耗，外围电子元器件以低压、低频、静态低功耗的器件构成；

In order to effectively reduce the power consumption , the electron parts are composed of low voltage , low frequency and low static power consumption components .

测量了卟啉衍生物的双光子吸收特性，发现在卟啉外围接入具有给电子和受电子能力的取代基能够有效的提高材料的双光子吸收截面。

Substitution of the donor or acceptor is a useful way to improve the two-photon absorption ability of the porphyrin derivatives .

笔者在文中将外围法律环境与电子商务税收立法的关键点相结合，针对电子商务税收立法的关键问题提出应具备的法律环境。

The author of this paper will combine the key elements of peripheral legal environment and e-commerce taxation legislation , possess legal environment of the key points of electronic commerce taxation legislation .