The oscillatory phase of the electromagnetic wave doesn't even advance such as in a vacuum — this is what we term a zero-phase delay.

电磁波的震荡甚至不像在真空中那样前进了。 这就是我们称之为零相位表现。

youdao

Media, such as media feed advance rate, UV Lamp intensity and platen vacuum force.

媒体，如媒体事先饲料率，紫外线灯强度和压板力量真空。

youdao

The research on vacuum micro-tool is advance task in the MEMS field.

微夹研究是微机械电子学系统（MEMS）领域的一个前沿课题。

youdao

"While we want to encourage life-saving advances we must not let science advance in a moral vacuum, " he said.

CNN: U.S. lawmakers debate limits on human cloning

After that should come quantum computing an advance comparable to the replacement of the vacuum tube by the transistor.

ECONOMIST: The future

Our advance army of maids holds the world by its vacuum cleaners.

CNN: UNLEASHING MAID POWER