“pitchstone”的概念、定义、翻译、参考文献-科学参考

单词	pitchstone
释义	pitchstone [`pich´stōn] ^GEOLOGY A type of volcanic glass distinguished by a waxy, dull, resinous, pitchy luster. Also known as fluolite.
随便看	stepping stepping motor stepping reflex stepping relay stepping switch step pulley step-recovery diode step response step rocket step-servo motor step soldering step strobe marker step tablet step test steptoe step trench step-up transformer step voltage regulator step wedge stepwise reaction sterad steradian steradiancy sterane sterba curtain

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。