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

Table of Notes

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              <s id="N12B54">​第​三​圖​說</s>
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              <s id="N12B5A">​說
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              <s id="N12B62"> ​假​如​有​石​若​干​重，​欲​起​之​。</s>
              <s id="N12B65">​先​作​三​足​形​立​架，​上
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              ​收​下​開​。</s>
              <s id="N12B6A">​上​端​收​處，​平​安​短​鐵​橫​梁，​梁​上​繫​滑​車
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              ​一​具​。</s>
              <s id="N12B6F">​下​繫​滑​車​一​具，​緊​鉗​石​上​。</s>
              <s id="N12B72">​用​索​一​端，​從​上
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              ​滑​車​轉​垂​而​下，​即​從​下​滑​車​內​轉​輪​而​上，​復​過
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              ​上​滑​車​而​下​。</s>
              <s id="N12B79">​或​即​用​人​力​曳​之，​可​矣​。</s>
              <s id="N12B7C">​如​石​太​重，
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              ​則​滑​車​上​下​各​加​一​具，​或​加​二​具，​亦​無​不​可​。</s>
              <s id="N12B81">​愈
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              ​多​、​愈​輕，​人​力​愈​可​少​也​。</s>
              <s id="N12B86">​如​石​仍​太​重​難​起，​即​於
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              ​兩​豎​架​上，​安​一​轆​轤​在​內​。</s>
              <s id="N12B8B">​轆​轤​兩
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              ​端，​各​十​字​相​反​安​四​樁​木​。</s>
              <s id="N12B90">​用​人​力​轉​其​滑​車​內
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              ​所​轉​之​索​更​便，​且​力​甚​勁​也​。</s>
              <s id="N12B95">​兩​法​總​具​上​圖​中​。</s>
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