Terentius, Johannes; Zheng, Wang 王徴, Yuan xi qi qi tu shuo lu zui 遠西奇器圖說錄最, [1830]

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    <archimedes>
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          <chap id="N10015" n="1">
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              <s id="N1191B"> ​第​五​十​八​款 ​水​來​平​衝​於​閘​。</s>
              <s id="N1191E">​求​其​衝​勢​之​重​若​何?</s>
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            <p type="main">
              <s id="N11924"> ​如​上​求​水​柱​法,​止​以​所​衝​閘​面​高​低,
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              ​作a e​垂​線​。</s>
              <s id="N11929"> ​垂​線​平​行,​至i​相​等​。</s>
              <s id="N1192C">​即
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              ​從​垂​線​上​面​之a,​斜​行​至i,​則​是​水
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              ​衝​半​柱​之​重​。</s>
              <s id="N11933">​其​餘​多​水,​俱​無​干​也​。</s>
              <s id="N11936"/>
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          </chap>
        </body>
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    </archimedes>