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断面积的英文

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"断面积"怎么读用"断面积"造句

英文翻译手机手机版

  • basal area
  • crosssectional area
  • sectional area

例句与用法

  • Capture cross section
    捕获断面积
  • With prestressed rolling mill of the middle steelworks of taiyuan iron and steel limited group company as the researched object , this article analyze the existent questions and research the initial stress of prestressed rolling mill and computer control system , analyze the design thought of prestressed rolling mill and clarify the relationship between the dimensional precision of rolled material and the rigidity of base of rolling mill and the main method to increase the rigidity of base of rolling mill , analyze how to confirm the rigidity , sectional area of handle and post , and pretightening force , put forward the viewpoint that the key to assure great rigidity is to assure that the remnant initial stress is always positive during rolling , and develop intelligent control system with plc as the core on the basis of the former research to assure that the remnant initial stress is always positive during rolling
    本文以太钢集团公司中型型钢厂预应力轧机为对象,分析了该厂预应力轧机所存在的问题,对预应力轧机的预应力以及微机控制进行了系统研究;分析了预应力轧机的设计思路,阐明了轧材尺寸精度与轧机机座刚度的关系及提高轧机机座刚度的主要途径;分析了预应力轧机设计过程中预应力轧机的刚度、预紧拉杆和机架立柱断面积及预紧力的确定;提出了预应力轧机保证高刚度的关键就是“确保轧制过程中,残余预应力始终大于零”的观点;在前述研究的基础上开发了以可编程逻辑控制器为核心的智能监控系统,以确保“轧制过程中,残余预应力始终大于零”这个要求。
  • The impacts of both the velocity head and momentum distribution in the t - junction of a tailrace surge tank on the critical stable sectional area of the tank were analyzed by using gardel ' s empirical equations for t - junction flow . based on thoma ' s theory , a formula of the critical stable sectional area is derived . 5
    基于gardel关于三通管水头损失的经验公式,研究分析了连接管处的速度水头以及进出调压室水体与尾水隧洞水体之间的动量交换,对有连接管的尾水调压室稳定断面积的影响,并在托马( thoma )假定基础上,推导出相应的调压室稳定断面的计算公式; 5
  • According to the the regression analysis on the bloting and shotcreting roadways of henan pingmei group , the regression equation on the degree that absolute grade and area of roadway influence coefficient of frictional resistance is built in the paper . the notable character test of the regression equation is completed . at last , the degree that absolute grade and area of roadway influence coefficient of frictional resistance is discussed and summed up . the practical and guiding sense in choosing coefficient of frictional resistance of congeneric roadways is given in the paper
    通过对平煤集团大量的锚喷巷道的回归分析,建立了巷道壁面绝对粗糙度和巷道断面积对摩擦阻力系数影响程度的回归方程,并对回归方程作了显著性检验,最后对巷道粗糙程度和断面积对锚喷巷道摩擦阻力系数的影响程度进行了讨论和总结,对同类巷道摩擦阻力系数的选取具有实践指导意义。
  • For hoods with shutters in four sides , the results show : 1 ) the hoods positively placed boards are called hoods used for venting airflow ; hoods negatively placed boards are called hoods used for leading airflow ; 2 ) among the hoods used for venting airflow , the most effective hoods should have positive declining angle value of 30 , the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ) , the value of b range from 70 mm to 120 mm and the value of b / h range from 0 . 5 to 0 . 6 ; 3 ) the most effective hoods should have negative declining angle value of 60 , the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ) , the value of b range from 100 mm to 170 mm ( the optimum value is 120 mm ) and the value of b / h range from 1 . 4 to 2 . 2 ( the optimum value is 2 . 0 )
    对于四面设百叶型风帽,计算表明: l )正装倾斜挡板的百叶型风帽可认为是排风型风帽,倒装挡板倾斜的百叶型风帽可认为是进风型风帽; 2 )排风型风帽中,挡板正装30 ” 、风帽四个迎风面的有效面积fy和风管净断面积fj的比值( fy肠)为4 、挡板宽度b在70inln到120inln之间、板间距比值陇在0 . 5到0 . 6的百叶型风帽排风效果最好; 3 )进风型风帽中,挡板倒装装60 “ 、风帽四个迎风面的有效面积和风管净断面积的比值( fy例)为4 、挡板宽度b在100咖到170mm之间( 120mm为最佳) 、板间距比值陇在1 . 4到2 . 0的进风型风帽( b爪= 2 . 0为最佳)的百叶型风帽进效果最好。
  • The method of modified simplex was applied to optimize the models , and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form . taxus chinensis var . mairei population , and the highest growth rate of basal area was the tenth age class , namely the phase when breast diameter was 68 ~ 76 cm
    以胸高断面积代替种群生物量,分别采用logistic常规模型及刘金福提出的logistic改进模型对南方红豆杉种群的增长动态进行研究,运用改进单纯形法对模型进行优化,拟合结果表明改进模型比logistic常规模型更符合南方红豆杉种群的增长趋势,南方红豆杉种群的最大增长速度出现在第10龄级,即胸径为68 76cm时期。
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