热声现象是放热过程和声学脉动之间的一种正向的相互激励。
The thermoacoustic phenomenon is a positive excitement betWeen lieat release and acoustic oscillation.
硼在针铁矿、水锰矿上的吸附为放热过程 ，解吸为吸热过程。
By contrast, the process for goethite and manganite were exothermic.
温度对包合反应的影响不大，包合过程是一个能自发进行的放热过程。
Temperature has little effect on the process of inclusion reaction which is a spontaneous exothermic process.
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