单词	pitch circle
释义	pitch circle noun : a pitch line in a circular gear that forms a circle concentric with the axis of the gear Word History Etymology pitch entry 4
随便看	conation conational conationalist conations conative conatus conc concamerated concameration concanavalin concanavalins concasse concassé concatenate concatenated concatenates concatenating concatenation concatenations concatenator concausal concause concauses concave concave grating

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