arc second

基本解釋

A sub-arc-second-accuracy method for measuring rotation-angle was proposed.
提出了一種亞角秒精度的轉(zhuǎn)角測量方法。
The ARS301 stage is a precise rotary positioner featuring Aerotech's patented sub-arc second resolution drive mechanism.
ARS301平臺是一款緊密的選裝定位器，是一款獲得公司專利的第二分辨驅(qū)動機(jī)械設(shè)備。
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For a specific fire control dynamic performance test system, its measurement result was 2.34" by using the method, which improved angle precision from 20 to 5 arc-second."
利用該方法測得某型火炮動態(tài)性能測試系統(tǒng)的測角精度為2.34″，將該系統(tǒng)的測角精度從20″提高到5″以內(nèi)。
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That would give it a resolution of a few thousandths of an arc-second—enough, were this an optical rather than a radio telescope, to see a boulder just a few metres across on the surface of the moon.
ECONOMIST: Radio telescopes
Burke missed a 3-pointer at the end of regulation that would have won it for Michigan — the Wolverines' only miss in nine second-half attempts from beyond the arc.
NPR: No. 3 Michigan Beats No. 10 Ohio State 76-74 In OT
They never trailed, held the league's best team from 3-point range to 4-of-25 shooting from beyond the arc, and bolstered their NCAA tournament credentials by beating Duke for the second straight time.
NPR: Wells Leads Maryland To 83-74 Upset Of No. 2 Duke