“双作用密封”概念、定义、翻译-科学时代

单词	双作用密封
释义	请查阅双动密封--双作用密封
随便看	packed weight packed word packer packer packer packer packery packet packet packet packet packet packet packet packet packet packet assembler packet assembler/disassembler (PAD) packet broadcast channel packet broadcast system packet filter packet-filter firewall packet filtering packet filtering packet flooding

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。