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The results of an investigation of different types of tungsten lamps in order to estimate the components of the error budget of spectrum-pyrometer apparatus are presented. Quantitative relations are considered and the results of experimental research, which enable systematic methods to be developed for eliminating the influence of polarization of the radiation of the lamps in standard radiation thermometry, are analyzed.Translated from Izmeritelnaya Tekhnika, No. 9, pp. 42–45, September, 2004. 相似文献
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本文研究用8098单片机对密闭大贮槽的贮液容量进行自动检测的应用系统,解决了把贮槽液位测量传感器输出的电流信号直接转换成贮液重量进行显示,从而使显示直观、清晰. 相似文献
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新的检定规程对检定条件、检定项目、检定方法、数据处理、检定结果处理和检定周期都进行了部分修改,本文从规程执行方面对自锁功能检查、加油机的最大允许误差及重复性的计算方法、加油机的付费金额误差的检定、掌握标准金属量器的滴定时间、首次检定时应注意的问题、数据处理时应注意的问题、加油机检定周期的合理调整、使用自动检定装置应注意的事项进行了总结。 相似文献
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反渗透设备是水处理行业常用设备,广泛用于纯水、高纯水等的预处理.通过试验,找到两种降低反渗透设备出水电导率的方法:反渗透设备进水软化后加碱和反渗透设备进水酸化后脱气,这两种方法都有一定的应用范围,应根据工艺要求和运行费用选择使用. 相似文献
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Based on the method of successive substitutions, an integral equation is derived in which multiple reflections are explicitly
identified. This equation is used provide simple methods of estimating the local effective radiation of two-dimensional and
three-dimensional systems of surfaces, with due regard for the anisotropy of their optical properties. A cylindrical cavity
confined by the surface of a right circular cylinder with a side pyrometric hole is treated as an example. The results obtained
by the suggested method are compared with the data of direct solution of an integral equation for the two-dimensional problem. 相似文献
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The dependence of the coefficient of concentration jump on the coefficient of vaporization for a diluted binary mixture, when
the concentrations of the components are significantly different, has been investigated. The analytical expression of the
concentration jump for the case where the frequency of collisions of molecules is in proportion to their velocity has been
obtained.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 2, pp. 121–126, March–April, 2007. 相似文献
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商标,一枚方寸图案,人们有很多十分形象的表述:有人说它是为商品鸣锣开道的使者,是把企业产品介绍给顾客的"红娘",是企业产品的"护身符",是开启市场的"金钥匙",是产品走向市场的"通行证",是企业跨入国际市场的"金护照".没有自己的商标,就没有自己的市场.随着市场竞争的日益激烈和改革开放的不断深化,商标在经济活动中的地位和作用日益显著. 相似文献
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P. V. Tsoi 《Journal of Engineering Physics and Thermophysics》2000,73(4):749-761
The author proposes a representation of the solution of the heat-conduction equation in the form of expansions in basis functions
that are selected depending on the form of the distribution of the internal heat sources.
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 73, No. 4, pp. 761–772, July–August, 2000. 相似文献
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鞋底复合层间粘合强度是旅游鞋的重要性能检验项目之一,是考核胶粘剂和粘合加工工艺的检测项目,直接反映的是复合层材料间的粘合牢度。本文依据QB/T 2886-2007标准,测定了旅游鞋鞋底复合层间的粘合强度。并根据测量不确定度评定与表征理论,分析鞋底复合层间粘合强度测量不确定度的来源。通过建立测定过程分量的测量模型,计算各变量的不确定度,合成不确定度,最终得出结果的扩展不确定度,为检测实验室人员在鞋底复合层间粘合强度测定不确定度的评定提供相应的借鉴作用。 相似文献
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The phenomenon of voltage-induced capacitance fluctuations in some compressed-gas, high-voltage capacitors has been observed. The experimental results show that the contraction of the electric field at the part of the insulating housing near the lower end of the high-voltage electrode is probably the main cause of the phenomenon. For measurement requiring high stability, the working voltage must be decreased properly 相似文献