502胶水应该不溶于水的， 但是热水温度高，超过了胶水的融点！！！！ 固体就变成液体了，也就滑溜溜的从你手上跑走了。。。。so easy 哪里粘住热哪里。。哦也·····················································································································································································································································································································································································································································································································································································