试论科技论文的语言特点

阐述了科技论文在现代社会中的重要地位和作用，着重探讨科技论文的语言特点。在科技论文中使用多语系语言，且除了使用自然语言符号系统以外，同时大量使用超自然语言符号系统。科技论文要求语言简明、精确，逻辑性强，并严格遵守有关的规范和标准；在语法上则多采用存在句、泛指句和析使句，常用第三人称。     

航空航天仪表中的图形、图像和符号化测量

从图像、图形和符号化测量的角度对航空航天仪表进行了概述．在此基础上，提出智能航空航天仪表的一种设计思想，以解决困扰航空航天仪表板总体设计数十年的难题：要求仪表显示的参数越来越多、驾驶员负担越来越重的问题．     

从《狐》看劳伦斯瑰丽的性爱世界

劳伦斯的《狐》采用了象征、预叙、隐喻等艺术手法，建构了虚拟与荒诞的双重性爱世界，其中虚拟的性爱世界是亨利与玛奇的性爱故事，玛奇与班福德的同性恋故事。荒诞的性爱故事是玛奇与狐狸的性爱故事。在这两重性爱故事中，心灵的性爱高于肉体的性爱。     

A novel range-Doppler imaging algorithm with OFDM radar

Traditional pulse Doppler radar estimates the Doppler frequency by taking advantage of Doppler modulation over different pulses and usually it requires a few pulses to estimate the Doppler frequency. In this paper, a novel range-Doppler imaging algorithm based on single pulse with orthogonal frequency division multiplexing(OFDM) radar is proposed, where the OFDM pulse is composed of phase coded symbols. The Doppler frequency is estimated using one single pulse by utilizing Doppler modulation over different symbols, which remarkably increases the data update rate. Besides, it is shown that the range and Doppler estimations are completely independent and the well-known range-Doppler coupling effect does not exist. The effects of target movement on the performances of the proposed algorithm are also discussed and the results show that the algorithm is not sensitive to velocity. Performances of the proposed algorithm as well as comparisons with other range-Doppler algorithms are demonstrated via simulation experiments.