本文对晏阳初"定县实验"中的"博士下乡"精神进行了探讨,并将之在中国当今现实农村建设和发展的过程中予以考察,揭示了"博士下乡"经验中所具有的可资借鉴的精神实质。
A high power buck-boost switch-mode LED driver delivering a constant 350 mA with a power efficient current sensing scheme is presented in this paper. The LED cu
随着我国经济的快速持续稳定发展,全国各省市经常举办各类大型活动来丰富人民群众的节假日生活.此类活动中往往搭建临时性演出舞台,同时需要布置临时的灯光系统,甚至为了达到
以川藏公路二郎山隧道抢险救援为实例,分析了隧道抢险救援的组织指挥、力量调集、战斗部署和处置程序等基本方法。
This paper concerns the design and the implementation of a fully integrated front-end intended to Near-Infrared Spectroscopy System (NIRS) acquisition system. A
<正>1 使用范围 光电离探测器在响应速度上较为理想,使用维护较为方便,大小适宜(大多数PIDs属于掌上型)。能探测到许多低浓度的危险气体。PIDs能够对数
对消防应急照明中电源的组成、工作原理、特点和使用要求进行了综合论述。
The paper presents an analytical derivation of Floquet eigenvalues and eigenvectors for a class of harmonic phase and quadrature oscillators. The derivation ref
The paper consists in the use of some logical functions decomposition algorithms with application in the implementation of classical circuits like SSI, MSI and
The In-doped CdTe/Si (p) heterostruture was fabricated and its electrical and photoelectrical properties were studied and interpreted. During the fabrication pr