求助！！帮忙翻译~

大家好，有谁精通门窗英语的麻烦帮我看下下面这段话是什么意思，那个bead在门窗英语中是翻译成什么呢？先谢谢大家了~ “the beads which hold the glass in the frame should be facing outside but they put it inside facing and rain water leaks from there at the bottom of the window frame.”