“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	arriswise arrival rate arrival time arrière-voussure arrojadite Arrow arrowroot arrowroot starch arrow wing arrowworm arroyo arsenal arsenate arsenic arsenic acid arsenical arsenical antimony arsenical nickel arsenic bloom arsenic disulfide arsenic oxide arsenic pentasulfide arsenic pentoxide arsenic trichloride arsenic trioxide

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。