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广西南宁市南州林场白糖罂荔枝连续低产原因分析及对策
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作者 覃立翔 《北京农业(下旬刊)》 2013年第A09期106-106,共1页
广西南宁市良庆区南州林场太安分场种植的白糖罂荔枝树势中等,枝条较开张,3月份开花,6月中旬左右果实开始成熟、采收,属早中熟、丰产品种。单果平均重21.4~31.8 g,皮色鲜红,果肉白蜡色,肉质爽脆,味清甜多汁,可食部分占全果重的70.0%~79... 广西南宁市良庆区南州林场太安分场种植的白糖罂荔枝树势中等,枝条较开张,3月份开花,6月中旬左右果实开始成熟、采收,属早中熟、丰产品种。单果平均重21.4~31.8 g,皮色鲜红,果肉白蜡色,肉质爽脆,味清甜多汁,可食部分占全果重的70.0%~79.2%。 展开更多
关键词 广西南宁南州林场 白糖罂荔枝 连续低产 原因分析 对策
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Interrupt CW Approach for IF Video Signal Real Time Simulating and Its Validity
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作者 朱灿焰 龙腾 +1 位作者 何佩琨 毛二可 《Journal of Beijing Institute of Technology》 EI CAS 2000年第1期73-79,共7页
To determine the feasibility and practicability of interrupt continuous wave (CW) approach proposed for real time simulating radar intermediate frequency(IF) video signal, theoretical analysis and computer simulation... To determine the feasibility and practicability of interrupt continuous wave (CW) approach proposed for real time simulating radar intermediate frequency(IF) video signal, theoretical analysis and computer simulation were used. Phases at two linked points between the end and beginning of adjoined frames are always consistent; the bias Doppler frequency for the time delay of A/D sampling start responds to that for target acceleration. No digital phase compensation is required at continuous points, and the interrupt CW approach has apparently practical values. 展开更多
关键词 intermediate frequency(IF) video signal generating in low IF(LIF) domain interrupt continuous wave (CW) phase shift A/D sampling delay error
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