ρ〕李光耀等.暗室技术入门.成都.四川科学技术出版社,1989 MEASURING THE WAVE LENGTH OF THE UNKNOWN SPECTRAL LINE USING THE POSITIVE AMPL IFY ING METHOD Dai Wei Ma Shubing Zhao Xumin (the HA Artillery Institute, Hefei 230031) It is introduced that the method of positive amplifying is used to analyse and measure the wave length of the ectral line positive; counter revolution, prism spectrograph; contrast exposure (上接12页 (3)本文介绍的二种液体密度的非电量电测法可以用于学生设计性实验,有利于学生 对电子天平的原理和结构的了解。 自〕鲁绍曾,现代计量学概论,中国计量出版社,1987.10 2) Stemme E. Ekelof J and Nordin. L, Measuring liquid density with a turning fork transducer. IEEE Trans. Im strum. Meas. Vol. IM- 32 434 No. 3, 1983 6)华东电子仪器厂,BHR-8型电子应变式荷重传感器使用说明书.1998 TWO NEW METHODS OF MEASURING LIQUID DENSITY Xu Jun Chen Jun Lu Shenlong Fudan University, Shanghai 200433) Abstract: The principle methods of measurement, results of the experiment and their application in measuring density automatically in chemical experiments, chemical industry and medical industry of the two new types of liquid -density measuring sensors are introduced Key words: sensor measurement of liquid density computer online mnitoring o1995-2005 Tsinghua Tongfang Optical Disc Co, LId. All rights reserved.〔2〕 李光耀等 1 暗室技术入门 1 成都 1 四川科学技术出版社 ,1989 MEASURING THE WAVE LENGTH OF THE UNKNOWN SPECTRAL LINE USING THE POSITIVE AMPLIFYING METHOD Dai Wei Ma Shubing Zhao Xumin (the PLA Artillery Institute ,Hefei ,230031) Abstract : It is introduced that the method of positive amplifying is used to analyse and measure the wave length of the unknown spectral line. Key words: positive ;counter revolution ;prism spectrograph ;contrast ;exposure (上接 12 页) (3) 本文介绍的二种液体密度的非电量电测法可以用于学生设计性实验 ,有利于学生 对电子天平的原理和结构的了解。 参 考 文 献 〔1〕 鲁绍曾 1 现代计量学概论 1 中国计量出版社 ,1987110 〔2〕 Stemme E. Ekelof J and Nordin. L ,Measuring liquid density with a turning fork transducer. IEEE Trans. In2 strum. Meas. Vol. IM - 32 ,434 ,No. 3 ,1983 〔3〕 华东电子仪器厂 ,BHR - 8 型电子应变式荷重传感器使用说明书 11998 TWO NEW METHODS OF MEASURING LIQUID DENSITY Xu Jun Chen Jun Lu Shenlong (Fudan University ,Shanghai 200433) Abstract : The principle ,methods of measurement ,results of the experiment and their application in measuring density automatically in chemical experiments ,chemical industry and medical industry of the two new types of liquid - density measuring sensors are introduced. Key words: sensor ;measurement of liquid density ;computer online monitoring — 51 — © 1995-2005 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved