This thesis has been written to study two basic problems about the jamming on radio proximity fuze and the anti-jamming of radio proximity fuze in electronic warfare field.

本论文主要研究了无线电近炸引信电子对抗中的两个基本问题，即无线电引信的干扰和无线电引信的抗干扰问题。

youdao

And the sheer number of people living in close proximity to one another creates additional problems.

FORBES: In China and India, Turbulence and Volatility Are Part Of The Bargain

Earlier testing also revealed problems with a Federal Aviation Administration ground-proximity warning system.

FORBES: As Icahn Circles, LightSquared Lashes Out At GPS Critics

West Midlands Police said it had been monitoring the fire due to its proximity to the M6, but reported no smoke-related problems on the motorway.

BBC: Smurfit Kappa fire: Crews tackle paper mill blaze