over-cooling

例句：

1. 1. The over-cooling water was causing the pipes to freeze.
   过冷却的水导致管道结冰。
2. 2.The undercooling of the liquid nitrogen led to a sudden expansion.
   液态氮的过冷却导致了突然膨胀。
3. 3. Supercooling is a phenomenon where a substance remains below its normal melting point.
   超冷却是一种物质在其正常熔点以下的现象。