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Flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and preparation method thereof
The invention relates to a flame-retardant glass fiber reinforced PC (Polycarbonate)/ABS (Acrylonitrile Butadiene Styrene) composite material and a preparation method thereof. The preparation methodExpand
应用高速切削技术的CAD/CAM/CNC集成系统研究
研究了传统串行CAD→CNC的体系结构,分析了高速切削技术与数控切削加工技术的主要区别。运用并行工程思想,提出一个基于“具有设计/制造特征的产品信息模型、智能化CAPP系统和高速切削CNC技术”的CAD/CAM/CNC集成系统。同时阐述了其中的一些关键技术。
两起鸡马立克氏病(MD)临床表现及病理观察
1 发病情况 近几年来,鸡马立克氏病在本地区多呈散发性,但时有暴发流行.如2004年5月,黄集镇后李村某养殖户饲养本地草鸡2 300只,已接种过马立克氏病火鸡疱疹病毒苗(MDV),但在鸡18~20周龄时,先后发病488只,发病率21.23%,死亡227只,死亡率9.87%,其中混合型感染192只,占发病数39.34%,饲养数8.35%.
微生态制剂"肽乐健"的应用效果研究
本试验在哺乳猪和保育猪饲料中添加饲喂“肽乐健”,结果显示:在哺乳期和保育期均降低了耗料量,提高了日增重,但与空白组相比差异不显著;哺乳期试验组的料重比显著降低,保育期试验组的料重比略有下降但差异不显著。
基于 CAE 支架的浇注系统与冷却系统的优化设计
以咖啡机支架为研究对象,通过CAE分析,准确预测了不同浇注系统的熔接痕分布情况,避免熔接痕在塑件的高亮外观面上产生,通过对模具冷却系统的CAE验证分析,发现了塑件的集热区域,并对冷却系统进行优化以满足塑件质量和生产周期的要求。
A attemperation system of highlight weld mark-free plastic mould
The invention provides a temperature control system for a high-gloss plastic mould without melted marks; the system comprises a temperature controller, a heating boiler, a cooling tower, a waterExpand
Injection mold forming structure for air seal between plastic piece and injection mold
An injection mold forming structure for air seal between a plastic piece and an injection mold is disclosed. Zigzag or wavy bumps are arranged in an edge area of corresponding to the plastic piece onExpand
Injection mold forming structure for sealing air between plastic part and injection mold
The utility model relates to an injection mold forming structure for sealing air between a plastic part and an injection mold. Serrated or wavy bulges are arranged in a region on the injection moldExpand
“坏孩子”的天空:王小新的故事
初二下学期以前,我和其他孩子一样,天天背着书包上学校,当时家里很希望我能好好读书,成为北大莘莘学子中的一员。“不幸”的是,我迷上了电脑。当时的电脑流行配置还是386,操作系统除了黑黑的DOS就是粗糙的Windows 3.X,界面超不友好。
Black highlight acrylonitrile butadiene styrene (ABS) alloy and preparation method thereof
The invention relates to black highlight acrylonitrile butadiene styrene (ABS) alloy and a preparation method thereof. The ABS alloy are prepared from the following components in parts by weight:Expand