短語詞組短語reference circle of wormwheel [機(jī)]蝸輪分度圓reference circle of worm [機(jī)]蝸桿分度圓reference circle fitting 定標(biāo)圓擬合minimum zone reference circle method 最小區(qū)域法circle of reference [物]參考圓;翻譯;參考圓 返回 reference circle