“bolted flat head”概念、定义、翻译-科学时代

单词	bolted flat head
释义	化工词汇手册 bolted flat head 螺栓连接式平封头，螺栓连接式平盖
随便看	social structure social structure social structure social structure social structure social structure social structure social studies social studies social studies social studies unit social style social subject social subject social support social survey social survey social symbiosis social symbiosis social system social system social system social system social system social system

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。