“希尔费尔丁”概念、定义、翻译-科学时代

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。

单词	希尔费尔丁
释义	请查阅希尔费尔丁，R
随便看	protective helmet protective import duty protective labour legislation protective layer protective layer protective layer protective leader protective legislation protective line protective margin protective mark protective medium protective mimicry protective operation protective ozone shield protective packaging protective packing protective painting clothing protective potential protective provision protective republicanism protective retention protective screen protective spark gap protective suit