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[ENG SUB]Disassemble a Reciprocating Saw 拆解一个往复锯，里面伸缩原理是怎么实现的？
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Dismantling and dismantling the structure principle of East and West electronic machinery
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https://www.youtube.com/channel/UCBdl8KAvC-quYbvTz_EENCw
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▶DIY改装：https://www.youtube.com/playlist?list=PLS72hvJwOgDXUL_yyGMl7L0QGlsKCkjyW
▶DIY拆解：https://www.youtube.com/playlist?list=PLS72hvJwOgDV0t_myFlM9c18grggdBSBg
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#DIY拆解 #往复锯 #Scalingprinciple
