Results 71 to 80 of about 108,140 (201)
Jianzhu Gangjiegou Jinzhan, 2017 利用经试验验证的有限元模型对均匀温度和不均匀温度分布下轴向约束波纹腹板梁的悬链线效应进行了参数分析,选取荷载比、轴向约束刚度比、跨高比及倾角为主要参数,研究了钢梁的跨中挠度、梁端轴力和悬链线弯矩等随温度的变化规律,并给出了火灾下钢梁的临界温度。由于不均匀温度下产生的热弯曲,钢梁在压力阶段的挠度更大而轴力更小。但均匀温度下钢梁的破坏温度比不均匀温度情况时高。钢梁的悬链线温度和破坏温度都随着荷载比的增大而降低。相同荷载比作用下,不同跨高比钢梁的悬链线温度相同,但其破坏温度随跨高比的增大而升高 ...
陈恒超, 刘昌斌
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[A case of high-temperature steel bar penetration injury from scrotum to buttocks]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022 Zheng SQ, Miao YL, He LR, Wang BY.
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Work Conditions for hot machining [PDF]
, 1953 In turning steels by means of the hot machining technique, the machinability varies remarkably with the room temperature, and hence tool material, depth of cut, feed and cutting speed should be changed also with the temperature.
村中 利吉
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水稲の登熟期の高温条件下における背白米および基白米の発生に関する遺伝解析 [PDF]
, 2011 筑波大学University of Tsukuba博士（農学）Doctor of Philosophy in Agricultural Science2010【要旨 ...
89209, 田畑, 美奈子
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Gaoya dianqi, 2018 户外设备长期工作在高温高湿、低温高湿等情况下,极易形成凝露,危害电路设备的正常运行。针对上述现象,文中在人工环境气候室内搭建了真型开关柜凝露试验系统,记录了不同温差及相对湿度条件下凝露形成时间,并测量了未形成凝露时的柜体内壁温度。结果表明:凝露形成时间是由温差和相对湿度共同影响的,当相对湿度不变时,温差越大,凝露形成时间越短;而当温差不变时,相对湿度越高,凝露形成时间也越短;并且,形成凝露的露点温度始终高于物体表面温度。最后,提出可通过减小温差 ...
郭沁 +4 more
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Influence of Mold Resistance on the Casting Stress [PDF]
, 1974 Influence of mold is one of the vari ous important factors as the reason of the casting stress.For, the cooling ability, the strength, the expansion rate, and the deformation capacity of mold in hight emperature which have thermal influence when the melt
武部 克嗣, 養田 実
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Deflection of Sodium-Silicate Self-Hardening Mold at a High Temperature [PDF]
, 1977 In order to appreciate the movement of the mold wall by the pressure of the poured molten metal, the deflection test at a high temperature is usually adopted.Therefore in these experiments, the authors have investigated about the properties of the self ...
中田 登志夫, 養田 実
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Shiyou jixie, 2012 为解决水平井注蒸汽测试中高温高压下动密封和连续管注入头超温问题，成功研制了水平井注蒸汽测试井口防喷密封装置。该装置采用二级密封及长密封段自密封方式，采用耐高温氟橡胶、碳纤维及钢垫的组合形式做密封件，采用耐350 ℃高温导热油自动控制加压密封件，采用水循环冷却管给连续管、密封系统降温，可确保起下时注入头不超温和施工安全。在测试起下过程中，2口水平井井口注汽压力均在13 MPa以上，井口防喷密封装置未发生蒸汽泄漏，注入头处温度低于120 ℃，完全可以满足高温高压下用连续管测试施工要求。
吴国伟 +4 more
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Anatomical study on the chalkiness formation of early indica rice(早籼垩白米形成的形态解剖学的研究)
Zhejiang Daxue xuebao. Lixue ban, 2002 以浙733(多垩白)和中优早5号(少垩白)两个品种为实验材料,利用人工气候箱控温手段,在植株开花后4天分别移入高(37℃)、中(30℃)、低温(24℃)的人工气候箱控温栽培.采用Spurr树脂半薄切片的方法对垩白部位的细胞结构和淀粉粒整体形态进行观察研究.实验结果表明,温度越高,腹背径向的细胞越扁,细胞数目越多,越易导致垩白的发生;不同温度处理下中优早5号的淀粉粒大多为多角形,但温度越高,淀粉粒排列越疏松,且大小不均一;低温处理下浙733的淀粉粒大多为多角形,排列较为紧密,但大小不均一,中 ...
JIANGWei-mei(姜维梅) +2 more
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, 2006 Plants of soybean(cv.Enrei) were grown in pots(1/5000a) in a viny house. Temperature treatment was conducter for 10 days from the beginning of the flowering period(BFP) in the growth chambers under artificial light controlled at day/night air ...
Kitano, Machiko +2 more
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