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Denoteα ∨ β = {A ∩ B|A ∈ α,B ∈ β},f?
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记α ∨ β = {A ∩ B|A ∈ α,B ∈ β},f? |
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Deoxyribozyme Esterase Activity of DNA from Embryo Fissue of Human
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酶性DNA：人胚组织DNA酯酶活性的初步研究 |
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Depend on Group Superiority,Developing Powder Metallurgy
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依靠集团优势 发展粉末冶金 |
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Deposition of Glossy Diamond Films
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表面光滑的金刚石薄膜的合成 |
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Deregulation,Subside and Fringe Entry
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强制性管制放松与边缘性进入的发生——“小灵通”现象的深层思考 |
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Deriving Soy Based Wood Adhesives from Genetically Modified Soy Meal
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利用转基因大豆粕转化蛋白基木材胶粘剂 |
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Dermoscopy for early detection of facial lentigo maligna
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皮肤镜用于面部恶性雀斑样痣的早期检查 |
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Described are the design scheme,main technical parameters and technical features of the siveting device for L-shaped brake beam wear sleeve on wagons.
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对货车L型制动梁磨耗套铆钉机的设计方案、主要技术参数和技术特点进行了介绍。 |
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Described is the development of high-impedance backing composites (up to .×0 kg·m-·s-) by using a kind of simple compressor. Working in cooperation with PZT- or PZT-, it gives a pulse width of . cycles.
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利用一种简单的压力装置，制作与PZT压电晶片匹配的背衬块，最高声阻抗可达．×0kg·m-·s－用于试制窄脉冲探头，可以实现.周期的脉冲． |
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Describes species of Ornativalva Gozmany: O. ochraeofusca Sattler and O. frontella Sattler discovered in China.
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本文记述中国柽麦蛾属新纪录种:额柽麦蛾Ornativalva frontellaSattler和褐柽麦蛾Ornativalva ochraceofusca Sattler,两种均分布于宁夏。 |
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Describes new-type braiding yarns, the technical parameters and processing property ofbraider SK-0, and analyses of the technical and economic efficiency of the braider.
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介绍了新型质编结丝及SK—0型编丝机的技术参数、工艺性能，并进行了技术经济分析。 |
