gluewater

It should be townee's masterpiece,and the mark of gluewater is also obvious.

应该是老乡的杰作，胶水的痕迹哪。

Then, we found that gas tightness had some problem, because gluewater of the heat copper of engine didn't pledge gas-tightness.

我们析其原因，发现气密并不好，加热处的胶水并不能保证密封。