“pan head”的概念、定义、翻译、参考文献-科学参考

单词	pan head
释义	pan head [`pan ´hed] ^{DESIGN ENGINEERING} The head of a screw or rivet in the shape of a truncated cone.
随便看	Pelogonidae Pelomedusidae Pelonemataceae Pelopidae United States Survey foot unitegmic unit element uniterm uniterm system unit fraction unit heater unit impulse unitized body unitized cargo unitized film unitized load unitized tooling unit length unit load unit loading unit magnetic pole unit mold unit normal unit of coal unit of fire

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。