far field

基本解釋

The eXpression of directivity of far field and near field was derived.
推導(dǎo)出了此類換能器的遠(yuǎn)場指向性和近場聲壓的表達(dá)式。
This method can obtain the estimation of the steering vector directly and is adaptive to both far field and near field models.
該方法可直接獲得導(dǎo)向矢量的閉式估計(jì)，并且該方法可適用于陣列遠(yuǎn)場、近場接收信號模型。
In the case of far field sources, based on the subspace direction-finding technique, a new method for active calibration of array shape is presented.
文中基于子空間類測向方法，在遠(yuǎn)場情況下，提出了一種新的估計(jì)陣元位置誤差的有源校正算法。

He adds that Russia in this field is far behind what he calls the modern civilized world.
and so there are some products where... at least, as far as, I don't know this field very well,
所以有的產(chǎn)品……至少，我對這個(gè)領(lǐng)域不是很了解，
廣告和價(jià)格的關(guān)系 - SpeakingMax英語口語達(dá)人

Because of those far-field sensors, in particular, the Nest knows that you're not at home if it hasn't detected movement in ages.
ENGADGET: iPod fathers unveil their next project, the Nest Learning Thermostat (hands-on)
Maybe not, but so far the field of Republican presidential candidates is sounding like a very hawkish lot, and recovering control of both the White House and Senate next year would give the GOP options for trimming other types of federal spending that are not feasible in the present political climate.
FORBES: GOP Electoral Victory In 2012 Could Rescue Defense Industry