单词:acetylene trichloride
乙炔化三氯
单词:acetylene trichloride 相关文章
台湾籍旅美老师今天交给我们的句子是: We'll get up close with prototypes in new categories like 3D printing, robotics, smart home sensors. And wellsome things that don't even have a category yet. 我们会接近各种新科技的原型
发表于:2019-03-05 / 阅读(182) / 评论(0)
留美老师带你每日说英文