短語(yǔ)詞組短語(yǔ)beam compass trammel 長(zhǎng)圓規(guī)Steel Beam Trammel 鋼桿規(guī)Extension Beam Trammel Dividers 長(zhǎng)梁分規(guī)beam compass beam trammel 長(zhǎng)臂圓規(guī) 返回 beam trammel