Application of downhole hydrodynamic propulsors solves the problem of exerting WOB, and are helpful to enhancing penetration rate.

井下液力推进器的应用在一定程度上解决了钻压的施加问题，有利于提高钻进速度。

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There is a problem because the penetration of the internet is outpacing proper understanding of the potential security dangers.

问题是现在对网络侵犯所带来的潜在危害远远超过了人们所能设想的”。

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Repeaters can solve the penetration problem and we know that technology moves swiftly down the price curve.

FORBES: Will The U.S.Allow Foreign Ownership Of A Giant Swath Of Our Broadband Spectrum?