Organochlorine pesticides (OCPs) are widely applied in agricultural industry.Contaminations caused by OCPs have negative effect on environment and do harm t
有足够的情报认为,可靠的先进的固态相控阵雷达(Rassr)将成为七十年代全新的战术雷达。Texas公司T2年初将发展多功能雷达。Rassr是空军提出的“分子电子学作雷达运用”
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在我国广大农村和边远地区的有线广播网中,广泛采用压电陶瓷扬声器和舌簧扬声器。这两种扬声器具有灵敏度高、价廉、配接方便(可省去一只输出变压器)等优点。实践证明,把这
In the present study, restricted-access material based on surfactant-coated dodecyl-functionalized magnetite nanoparticles (C12-Fe3O4) were prepared and dev
If you see a thunderstorm in the distance late at night, look at the sky above the clouds and watch close?ly. You might just glimpse a sprite.rnSprites are a ty
Three novel alkoxyl-functionalized ionic liquids (ILs), 1-(3-triethoxysiyl propyl)-3-methyl imidazolium tetrafluoroborate (TESPMIM[BF4]), 1-(3-triethoxysiyl
黄瓜顶端双斜插嫁接法顶端双斜插嫁接技术，又称“顶端四台双４５°斜插法”．其突出优点是：成活率高（基本达１００％）、缓苗期短、简单易学、省工省事、易于管理，容易被菜农接受．嫁接砧木适期长（从
红壤温州蜜柑镁锌营养失调症及其矫治邵阳市属红壤丘陵山地，气候温和，雨量充沛，是温州蜜柑适宜栽培区，全市现有栽培面积４万ｈｍ２。近１０多年来，特别是进入盛产期以后，温州蜜柑园陆续出现叶片
在1972年颁布了《由有色金属和钢线所构成的区内明线通信电路网和音频电路》的新的技术条件,(Ty45 419—70)本文叙述新TY的基本原理并且按照区内明线通信干线的设计作一个简
Cytokinins (CTKs) are a class of growth regulating hormones that play a central role in a wide range of biological processes in plants.Many challenges have