...斑背燕尾 Spotted Forktail ; Spotted Forktail Enicurus maculatus ; Enicurus maculatus 燕尾形 swallowtail ; dovetail 燕尾旗 burgee ; pennon ; banderole ; bandrol ..
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所述平行六边形拼板优选为非对称燕尾形。
Preferably the figure of the parallel hexagon piece looks like unsymmetrical swallowtail.
前壁有燕尾形的垂直导轨，供升降台上下移动。
The anterior wall of the vertical guide dovetail, for mobile lifting platform.
导轮架进给导轨采用燕尾形滚针导轨，进给用差动丝杆；
The regulating wheel feed slide is supported on dovetail needle roller guideway and a differential leadscrew is used for performing feed motion.
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