In some application, a narrow groove is cut into the piston above the top ring to serve as a "heat dam" 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。
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。
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.
HBC大坝混凝土是一种可望在水工大体积混凝土工程中推广应用的低热高抗裂大坝混凝土。
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