The main heating source for the house is a 150 metres deep ground sourceborehole connecting to a heat exchanger which feeds under-floor heating.
住宅的主要热源是一个150米深的地源钻孔，连接到一个以地下热为主的热交换器。
2
Initial borehole acoustic imaging relied on using the monopole source and focusing the analysis on the radiated compressional body waves that were reflected back to the borehole.
最初的井眼成像依赖于单极子源并侧重于分析反射回井眼的辐射纵体波。
3
The acoustic wave field excited by a pulsed point source in a fluid-felled borehole surrounded by horizontal multiple-layered media is solved by the send-analytical method.