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An experimental research of dynamic characteristics for long wall shearer cutting unit gearbox in oblique cutting被引量:4
《International Journal of Coal Science & Technology》2020年第2期388-396,共9页Jue Wang Shiyao Song Peng Li 
This paper was supported by the National Basic Research Program of China(2014CB046303).
Oblique cutting is a working condition in fully mechanized mining whose function is making it possible for coal shearer to cut coal wall.Coal shearer often exhibit large vibration amplitudes in oblique cutting since t...
关键词:Experimental study Coupling frequencies Beat vibration Coal shearer Dynamic behavior 
Beat note analysis and spectral modulation of terahertz quantum cascade lasers with radio frequency injection
《Chinese Optics Letters》2017年第1期95-99,共5页朱永浩 黎华 万文坚 顾立 周涛 Stefano Barbieri 曹俊诚 
supported by the“Hundred-Talent”Program of Chinese Academy of Sciences;the National Natural Science Foundation of China(No.61575214);the Shanghai Municipal Commission of Science and Technology(Nos.14530711300,15560722000,and 15ZR1447500);the National 973 Program of China(No.2014CB339803);the Major National Development Project of Scientific Instrument and Equipment(No.2011YQ150021)
We demonstrate the electrical beat note analysis and radio frequency (RF) injection locking of a continuous wave (cw) terahertz quantum cascade laser (QCL) emitting around 3 THz (-100 μm). In free running the...
关键词:MODULATION Quantum cascade lasers Radio waves Semiconductor lasers Spectroscopy 
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