In some application, a narrow groove is cut into the piston above the top ring to serve as a "heatdam" to reduce the amount of heat reaching the top ring.
在一些实际结构中，一条窄槽切入顶端活塞环的上部，其作用是充当“隔热槽”以减少达到顶端活塞环的热量。
2
Secondly, two quantitative calculation modes for dam leakage are proposed with the heat resource method.
其次，利用热源法建立了堤坝渗漏的两个定量计算模型。
3
HBC dam concrete is a new dam concrete with low-heat and high crack resistance, and is expected to be widely used in the mass concrete projects of water resource engineering.