为实现真空100 Kä½Žæ¸©çŽ¯å¢ƒä¸­çš„çº¢å¤–è®¾å¤‡æµ‹è¯•ï¼Œè®¾è®¡äº†ä¸€ç§ç¦»è½´ä¸‰åå¼çš„å‡†ç›´ç³»ç»Ÿã€‚è¯¥ç³»ç»Ÿé‡‡ç”¨æ— çƒ­åŒ–è®¾è®¡ï¼Œæ•´æœºç»“æž„é€‰ç”¨SiC材料，在镜体与支撑结构连接处采用Cå½¢å¼€å£èƒ€é”€ä½œä¸ºæŸ”æ€§ç»“æž„ï¼Œè¡¥å¿è¿žæŽ¥ç»“æž„çš„ä½Žæ¸©å˜å½¢ã€‚ç³»ç»Ÿæ•´ä½“é™¤åå°„é•œå¤–ï¼Œå ¶ä½™éƒ¨åˆ†å ¨éƒ¨åŒ è£¹åœ¨ä½Žæ¸©è¾å°„å†·æ¿å† ã€‚ä½Žçƒ­å¯¼ç»çƒ­æ”¯æ’‘ç»“æž„åœ¨çƒ­ä...

The term “event extraction” covers a wide range of information extraction tasks, and methods developed and evaluated for one task may prove quite unsuitable for another. Understanding these task differences is essential to making broad progress in event extraction. We look back at the MUC and ACE tasks in terms of one characteristic, the breadth of the scenario – how wide a range of information...

In this paper a proposed of design and analysis of Finite impulse response filter using Hyperbolic Cosine window (Cosh window for short). This window is very useful for some applications such as beam forming, filter design, and speech processing. Digital FIR filter designed by Kaiser window has a better far-end stop-band attenuation than filter designed by the other previously well known adjust...

This paper investigates the design and application of data magnitude modulation to reduce power amplifier back-off for QPSK and OQPSK modulations for small satellite Earth stations. The coefficients for data magnitude modulation are obtained by using an iterative design loop. The parameters of this loop are tuned to obtain maximum gain. Roll-off factors from 10% to 100% are considered, with emp...