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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1 - 30
31 - 60
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2
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<
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N12473
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xlink:href
="
X03/01/205.jpg
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係重。</
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<
s
id
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">人在輞邊平處用力。</
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<
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">其重與能
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力,有輪半徑與軸半徑之比例。</
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<
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<
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"> 如上圖。</
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<
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id
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N1248C
">輪之半徑為ai,軸之半徑
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lb
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為ae,ai要平行。</
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>
<
s
id
="
N12491
">i下有力或重
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lb
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如o。</
s
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<
s
id
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N12496
">軸上纏索係重為u。</
s
>
<
s
id
="
N12499
">因ai四
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lb
/>
分,ae一分,兩半徑有四倍之比例。</
s
>
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s
id
="
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所以u重為八百斤,能力止用二百
<
lb
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斤即相準也。</
s
>
<
s
id
="
N124A4
">再加少力,則重起矣。</
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/>
</
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</
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<
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type
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head
">
<
s
id
="
N124AE
">第五十八款 輪即等子類,如滑車即天平之類。</
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<
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"/>
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