1) Herschel-Quincke tube
HQ管
1.
The Herschel-Quincke tube concept is a recently developed method for the reduction of noise from turbofan engines.
针对HQ管抑制风扇噪声这一主动控制噪声的方法开展研究,包括理论分析和数值模拟,在圆管情况下使用HQ管的消声效果预测和HQ管各几何参数对消声效果影响的讨论。
2) 7 HQ
7-HQ
1.
In this paper, the effect of solvent on the excited state proton transfer (ESPT) of 7 hydroxyquinoline (7 HQ) have been studied by observing the absorption and fluorescence spectra of 7 HQ in various solutions with different polarities, acidities, basicities.
通过观测 7-羟基喹啉 ( 7-HQ)在不同极性和不同酸碱度的溶液中的吸收光谱和荧光光谱 ,研究溶液对 7-HQ的激发态质子转移的影响 。
3) HQ steel
HQ钢
4) HQ core
HQ孔
5) Q345c-hq Steel
345c-hq钢
6) Nd(Hsal) 2·hq
Nd(Hsal)2·hq
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