“direct positive”的概念、定义、翻译、参考文献-科学参考

单词	direct positive
释义	direct positive [dǝ¦rekt `päz·ǝd·iv] ^{GRAPHIC ARTS} A photographic positive made by exposure to light and developed without a negative.
随便看	trough fault troughing idler troughing rolls trough plane trough reef trough surface trough valley trough washer trout Trouton-Noble experiment Trouton's rule trowel troweling machine troy ounce troy pound superadiabatic lapse rate superaerodynamics superalloy supercalendered finish supercalendering supercapillary interstice supercavitating propeller supercentrifuge supercharge method supercharger

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。