vitaphone

vitaphone

1. 1926 - Western Electric and Warner Bros. announce Vitaphone, a process to add sound to film.

1926年的今天，美国西部电力和华纳兄弟公司宣布了“维太风”，一种将声音加入胶片的后期处理过程。

2. Methods To fill the root canal of the primary teeth using two different materials,one group was filled with Vitaphone paste and the other was filled with ZOE paste,with visit for one year.

方法用两种根管充填材料对乳磨牙进行根管充填,实验组用比塔派克斯糊剂进行根管充填,对照组用氧化锌丁香油糊剂根管充填,并随访1年。