短語詞組短語circular cutting disc 回轉(zhuǎn)刀盤circular disc feeder 圓盤進料機circular disc radius 圓盤半徑area of circular disc 圓的面積circular disc cam 圓盤凸輪circular disc iterative method 圓盤迭代法Half circular disc 半圓盤 返回 circular disc