So, for example, if I have a sodium ion over here, and I have a chloride ion over here, where the distance from center to center r I'm denoting as r, this is nucleus to nucleus separation.

所以，比如这有一个钠离子，和一个氯离子，它们中心与中心间的距离,我把它设为，这是原子核和原子和的间距。

youdao

The center distance of two holes is equal to the center distance of the corresponding venting hole and the water hole of the boiler.

两孔的中心距与相应锅炉通气孔、通水孔的中心距相等；

youdao

Consequently, the measuring accuracy will no longer be restrained by the center-to-center distance of the picture elements.

因而，衍射测径的精度不再受CCD像元中心距大小的限制。

youdao

From Mel Fisher's Museum, we walk the short distance to Mallory Square, the center of Key West's historic area.

VOA: special.2010.03.22

So, for example, if I have a sodium ion over here, and I have a chloride ion over here, where the distance from center to center r I'm denoting as r, this is nucleus to nucleus separation.

所以，比如这有一个钠离子，和一个氯离子，它们中心与中心间的距离,我把它设为，这是原子核和原子和的间距。

麻省理工公开课 - 固态化学导论课程节选

The center's distance learning program uses puppets to teach children in classrooms in forty-four American states.

VOA: special.2009.09.23

Normally, getting in on the updates requires a trip to your friendly local service center -- or, for the 95 percent of us outside driving distance, saying goodbye to your mobile buddy for a couple days.

ENGADGET: Nokia offering firmware upgrades direct to users Mobile

This is what occurs to Henry David as he squats on the bank of Fair Haven Bay, a third of the distance from Mount Misery to the center of Concord.

NPR: Excerpt: 'Woodsburner'

As would be expected, you're supposed to stand relatively center on the TV, and at a certain optimal distance.

ENGADGET: PlayStation Move first hands-on (update: video!)