Turns out the size of the electric field is inversely proportional to the separation distance.

电场的大小和分离距离成反比。

youdao

In this paper, the method for the optimal gray threshold is given, which is based on the maximum class separation distance criterion of pattern recognitive decision theory.

利用基于模式识别决策理论的最大类间距准则，给出了求解最佳分割灰度门限的方法。

youdao

The new device shows that it is possible to build a "non-resonant" levitation device — one that does not require a fixed separation distance between the source and the reflector.

而新装置表明“非共振”的悬浮装置是可能的，其无需在声源和反射器之间固定距离。

youdao

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 study recommended a minimum vertical separation distance between fracking wells and water supplies of 600m (2, 000ft).

BBC: Fracking: Untangling fact from fiction

In the specific case of maize, to ensure that seed stocks achieve 99.9% purity, a separation distance of 200 metres is required from any source of "contaminating" maize pollen.

BBC: GM trial 'no threat to organic centre'

It estimates more than 11% of the island's 68, 900 population has put their name to the petition which calls for a ban on commercial wind turbines in any Area of Outstanding Natural Beauty and a separation distance of at least 1.5km (0.9 miles) from housing.

BBC: 8,000 sign Anglesey petition against wind turbines