The scheme accomplishes range tracking by adopting three range gate tracking to make middle gate always centered at echo pulse center through feedback circuit and deviation calculation circuit.

该方案采用三波门跟踪，通过偏差计算电路和反馈控制电路使中间波门中心始终对准目标回波脉冲中心，完成距离跟踪。

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This year they have introduced three new products to extend their range.

今年他们已引入了3种新产品以扩大他们的范围。

《柯林斯英汉双解大词典》

Orbison's vocal range spanned three octaves.

奥毕森的音域跨越三个八度。

《牛津词典》

Separately,North Korea fired three short range missiles off its east coast Monday.

VOA: standard.2009.05.26

U.S.officials say no part of the three-stage rocket reached orbit and the launching was a thinly-disguised test of a long-range ballistic missile that was banned under a 2006 U.N.resolution.

VOA: standard.2009.04.15

U.S.officials said no part of the three-stage vehicle reached orbit, and that in any case it amounted to a long-range ballistic missile test forbidden under a Security Council resolution that followed its October 2006 nuclear test.

VOA: standard.2009.04.14

Our main concerns are for next year because one of three long range forecasts for rainfall are predicting a drier than average start.

BBC: Jersey water stocks improved by heavy rain

Miller came off the bench last night and went seven for eight from three point range, scoring more points than either Russell Westbrook or Dwyane Wade.

FORBES: Three Reasons For LeBron Haters To Be Happy

Tyshawn Taylor, Kansas' up-and-down point guard who struggled from three-point range throughout the tournament, sank two free throws with eight seconds left to secure a three-point lead.

WSJ: Kansas Jayhawks Defeat Ohio State Buckeyes, Advances to NCAA Championship