欧几里得算法处理密里根油滴试验数据

本文介绍了结合欧几里得算法和计算机编程处理密里根油滴试验数据,从而寻找基本电荷e的电量的方法.

用VB编写密立根油滴实验数据处理软件

Visual Basic 6.0是创建Windows应用程序最简便、最快捷的工具之一。密立根油滴实验测定了基本电荷e,但数据计算十分繁琐。可用VB编写数据处理程序;使用时只需输入相应数据,运行程序即可得到实验结果。其使用方法简便快捷,节省时间而且计算结果一目了然。

秦山CANDU机组525kV GIS油泵无法建压原因分析及处理方法

秦山CANDU机组525kV GIS断路器分合闸的动力来源是油泵建立的液压油压力,并且液压油压力需要建立在标准范围内,如果压力过低,断路器将无法正常进行分合闸,影响电网的正送电、倒送电以及相应的预防性检修工作。本文从油泵建压回路的结构上论述了断路器油泵无法建压的原因以及相应的处理方式,并且给出了紧急处理的方法及从根本上解决的方法,针对同属液压动力的525kV GIS断路器具有普遍的参考意义。

Effects of Planting Density, Duration of Disclosing Plastic Film and Nitrogen Fertilization on the Growth Dynamics of Rapeseed under No-tillage Cultivation

[ Objective] This study was to understend the optimized combination of planting density, duration of disclosing plastic film and nitrogen fertilization under no-tillage cultivation. [ Method] Quadratic polynomial regression and saturated D-optimal design were employed to investigate the effects of planting density, duration of disclosing plastic film and nitrogen fertilization on the dynamics growth of rapeseed under no-tillage cultivation.[ Result] Within the experimental range, the growth dynamics of no-tillage cultivated rapeseed assumed a rise-fall tend. For the effects to the growth dynamics of no-tillage cultivated rapeseed, nitrogen application amount was higher than planting density and duration of disclosing plastic film. The interaction effect between planting density and duration of disclosing plastic film was higher than that between nitrogen application amount and planting density, and between nitrogen application amount and duration of disclosing plastic film. [ Conclusion] The optimized combination of these factors for dynamic growth of rapeseed under no-tillage cultivation was determined to be： planting density of per hectare 154 925 individuals, duration of disclosing plastic film of 110 d, nitrogen application amount of 315 kg/hm^2.

柱塞副修复4法

柱塞副是柴油机上燃油供给系统的精密偶件,通常是采用耐磨耐蚀性好的、热处理变形小的轴承钢和合金工具钢制成,并经过热处理,使其表面硬度达HRC60～65。柱塞副严重磨损后,一般多为成对更换新件。为延长杜塞副的使用寿命,对轻度磨损的柱塞副,可根据具体情况进行修复,但不论采用哪种复方法,都必须进行油密性试验。