国内英语资讯:China leader in satellite atomic clocks
<p><span word="BEIJING">BEIJING</span>, <span word="Jan">Jan</span>. 18-- <span word="China">China</span> <span word="leads">leads</span> <span word="development">development</span> <span word="of">of</span> <span word="satellite">satellite</span> <span word="atomic">atomic</span> <span word="clocks">clocks</span>, <span word="researchers">researchers</span> <span word="said">said</span> <span word="Thursday">Thursday</span>.</p><p><span word="BeiDou">BeiDou</span> <span word="navigation">navigation</span> <span word="satellites">satellites</span> <span word="sent">sent</span> <span word="to">to</span> <span word="orbit">orbit</span> <span word="last">last</span> <span word="week">week</span> <span word="are">are</span> <span word="fitted">fitted</span> <span word="with">with</span> <span word="the">the</span> <span word="latest">latest</span> <span word="generation">generation</span> <span word="of">of</span> <span word="rubidium">rubidium</span> <span word="and">and</span> <span word="hydrogen">hydrogen</span> <span word="atomic">atomic</span> <span word="clocks">clocks</span> <span word="developed">developed</span> <span word="by">by</span> <span word="the">the</span> <span word="Second">Second</span> <span word="Academy">Academy</span> <span word="of">of</span> <span word="China">China</span> <span word="Aerospace">Aerospace</span> <span word="Science">Science</span> <span word="and">and</span> <span word="Industry">Industry</span> <span word="Corp">Corp</span>.</p><p><span word="Compared">Compared</span> <span word="with">with</span> <span word="the">the</span> <span word="previous">previous</span> <span word="generation">generation</span>, <span word="the">the</span> <span word="new">new</span> <span word="clocks">clocks</span> <span word="are">are</span> <span word="smaller">smaller</span>, <span word="lighter">lighter</span>, <span word="perform">perform</span> <span word="much">much</span> <span word="better">better</span> <span word="and">and</span> <span word="are">are</span> <span word="among">among</span> <span word="the">the</span> <span word="world">world</span>'<span word="s">s</span> <span word="best">best</span>, <span word="Chinese">Chinese</span> <span word="scientists">scientists</span> <span word="said">said</span>.</p><p><span word="Atomic">Atomic</span> <span word="clocks">clocks</span> <span word="use">use</span> <span word="vibrations">vibrations</span> <span word="of">of</span> <span word="atoms">atoms</span> <span word="to">to</span> <span word="measure">measure</span> <span word="time">time</span>. <span word="An">An</span> <span word="accurate">accurate</span> <span word="and">and</span> <span word="ultra">ultra</span>-<span word="stable">stable</span> <span word="set">set</span> <span word="of">of</span> <span word="atomic">atomic</span> <span word="clocks">clocks</span> <span word="is">is</span> <span word="essential">essential</span> <span word="for">for</span> <span word="global">global</span> <span word="navigation">navigation</span> <span word="satellite">satellite</span> <span word="systems">systems</span> <span word="that">that</span> <span word="require">require</span> <span word="a">a</span> <span word="high">high</span> <span word="degree">degree</span> <span word="of">of</span> <span word="precision">precision</span>.</p><p><span word="BeiDou">BeiDou</span> <span word="aims">aims</span> <span word="to">to</span> <span word="rival">rival</span> <span word="the">the</span> <span word="GPS">GPS</span> <span word="of">of</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span>, <span word="Russia">Russia</span>'<span word="s">s</span> <span word="GLONASS">GLONASS</span> <span word="and">and</span> <span word="the">the</span> <span word="European">European</span> <span word="Union">Union</span>'<span word="s">s</span> <span word="Galileo">Galileo</span> <span word="as">as</span> <span word="an">an</span> <span word="alternative">alternative</span> <span word="global">global</span> <span word="satellite">satellite</span> <span word="navigation">navigation</span> <span word="system">system</span>. <span word="It">It</span> <span word="intends">intends</span> <span word="to">to</span> <span word="cover">cover</span> <span word="Belt">Belt</span> <span word="and">and</span> <span word="Road">Road</span> <span word="countries">countries</span> <span word="by">by</span> <span word="the">the</span> <span word="end">end</span> <span word="of">of</span> 2018 <span word="and">and</span> <span word="operate">operate</span> <span word="globally">globally</span> <span word="by">by</span> <span word="around">around</span> 2020 <span word="with">with</span> <span word="a">a</span> 35-<span word="satellite">satellite</span> <span word="constellation">constellation</span>.</p>
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