A sinusoidal phase-modulating (SPM) laser diode (LD) interferometer for real-time surface profile measurement is proposed and its principle is analyzed.

提出一种实时测量表面形貌的正弦相位调制半导体激光干涉仪。

youdao

For a time, surface and subsurface current are in opposite directions; flow is seaward at the surface and landward near the bottom.

在一个时期，表层和次表层的水流方向相反；表层水流向外海方向流动，靠近底层的水流则向陆地方向流动。

youdao

For a time, surface and subsurface current are in opposite directions;

在一个时期，表层和次表层的水流方向相反；

youdao

Volcanic activity broke the large island into pieces that came to the surface of the sea over time.

VOA: special.2009.12.16

I don't believe we'll-- I'll--come close to scratching the surface of what I would enjoy doing, by the time I've died.

我不能相信-,我能推测死时,自己会对什么感兴趣。

耶鲁公开课 - 死亡课程节选

At the same time, hot liquid rock from deep in the Earth pushed to the surface.

VOA: special.2009.01.07

Whether this will give the Surface time to play catch-up - or whether some iPad users will stop using Office - remains to be seen.

BBC: Interview: The man behind the PowerPoint presentations

Sequential optical images of high spatial resolution were used for the first time to derive surface ice velocities of Glaciar Upsala, a fast-moving fresh-water calving glacier in southern Patagonia.

UNESCO: Dublin Core

We spent quite a bit of time with the Surface Pro, sampling a variety of day-to-day scenarios to see how it fared versus the tablets and laptops it will be competing against.

ENGADGET: Microsoft Surface Pro review