semilunar valve
noun [ C ] anatomy specialized uk/ˌsem.i.luː.nə ˈvælv/ us/ˌsem.i.luː.nɚ ˈvælv/
半月瓣
one of the valves (= structures that open and close) that stop blood from returning into the ventricles (= lower spaces) of the heart
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。