Meanwhile, Matt Poese and colleagues at Pennsylvania State University in University Park are developing an HFC-free air conditioning system based on sound.
同时宾夕法尼亚州州立大学帕克学院麦特珀斯正和同事们开发一种基于声音的无氟空调系统。
2
In Pavlov's conditioning experiments with dogs, salivation at the sound of a bell is the conditional response.
在帕夫洛夫的空调实验狗，流涎在喤是有条件的回应。
3
Sound frequently used 360-degree Shuttle adjust the volume, this procedure is the Shuttle-conditioning part of normal use.