drainage layer（排水层）是什么意思？音标发音+图解场景

排水层 /ˈdɹeɪnɪdʒ ˈblaŋkɪt/ n

English: drainage layer · 排水层

释义：Layer of permeable materials that is inserted into large-scale dams to collect infiltrated water.

这个词出现在以下图解场景（1）