“减焦距镜”的概念、定义、翻译、参考文献-科学参考

单词	减焦距镜
释义	减焦距镜 Encyclopedia 艺术学特殊效果镜释 wide converter减焦距镜安装在摄影镜头光路中，可使该摄影镜头的焦距值成倍率（如0.42×、0.7×）缩小的附属镜。为倍率镜的一种。又称减倍镜、广角附加镜。
随便看	test of homogeneity test of independence test of level α test of linearity test of location test of normality test of parallelism test of parallelogram test of parallels test of parameters in normal distribution Test of Practical Chinese test of randomness test of significance test of similarity test of special relativity test of statistical hypothesis test of supportability design characteristic for aircraft materiel test of symmetry test of the random number test of the significance of difference test of trend test of validity test of variances testoid test on foundation improvement

科学参考收录了854744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。