名词解释题道岔中心线表示法 method of indicating the center line of turnout
名词解释题
道岔中心线表示法 method of indicating the center line of turnout
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()leads at right angles to the center line from the stern to the shore.A、An aft breast line.B、An aft springC、The stern lineD、A fore breast line
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名词解释题线路中心线 center line of track