Ball & Acme Screw Products. The main function of Ball and Acme (Lead) Screw Assemblies is to provide a drive mechanism, usually within a positioning table, to move …
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52. Corydalis repens Mandl & Muehldorf, Bot. Közlem. 19: 90. 1921. 全叶延胡索 quan ye yan hu suo Corydalis lineariloba Siebold & Zuccarini var. micrantha Ohwi ...
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