spring saddle
Misspelling of hydroxychloroquine.
(American spelling) a flexible fibreoptic device for viewing otherwise inaccessible areas
(railways, historical) A bent metal bar on the top of a railway carriage journal-box, surrounding the arch-bar and supporting the spring.
(topology) A structure defined for a (topological) manifold so that it supports differentiation of functions defined on it.
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DiQt（ディクト）
無料
★★★★★★★★★★
