关于额定电压3200伏和额定电流6000安以下,保护室内电机、水银整流器和配电线在短路、过载和逆流故障的直流高速自动开关,苏联在1957年颁布了新的国家标准2585—57,以代替1944年的旧标准。其内容简要介绍如下: 新标准要求直流高速自动开关能满足在海拔1000公尺,空气绝对湿度80%和外温35℃以下的条件下的连续运行。切断短路和逆流故障时 ...
doaj
[Limb reconstruction over four decades: the seamless path from technical integration to disciplinary ecology]. [PDF]
Zhu Y.
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我厂生产的G.P型直流高速开关是仿民主德国AEG工厂Gerrapid型制造的。这种开关是电解、制铝和电车等工厂企业整流站直流系统故障保护必不可少的装置。由于我国交通、冶金和化工事业的飞跃发展,对于这种装置的需要也日益迫切。 G.P型直流高速开关在结构上虽然地较复杂,加工要求也比较精确,但与苏联、美国和日本的同类型产品此较,不仅结构精巧美观、用料节省 ...
doaj
[Effectiveness comparison of medial-lateral approach and posteromedian approach in release of elbow stiffness after distal humeral fractures surgery]. [PDF]
Xuan L, Ma H, Li F.
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[Advances in early repair and reconstruction of severe limb injuries]. [PDF]
Xu Y.
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[Research progress on flexible wearable sensors for health monitoring]. [PDF]
Chen X, Xu G.
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[Clinical efficacy of multidisciplinary team collaboration in the treatment of deep sternal wound infection]. [PDF]
Tong L +6 more
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[Development and practice of an interactive chromatography learning tool for beginners based on GeoGebra: a case study of plate theory]. [PDF]
Zhang YH +5 more
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[Advances in application of cell imprinting technology in biomedical field]. [PDF]
Zhao XM, Zhang ZY, Sun WJ, Qing GY.
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[Perioperative management of direct-to-implant-based breast reconstruction in breast cancer patients and West China Hospital experiences]. [PDF]
Feng Y, Zhang D, Liang F, Luo G, Du Z.
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