短語(yǔ)詞組短語(yǔ)balance lifting beam 天平balance e beam 平衡木balance e beam engine pump 發(fā)動(dòng)機(jī)平衡桿泵Non -automatic balance - Beam balance 非自動(dòng)天平Balance Beam Score 平衡木評(píng)分法Balance beam spherule 平衡木小球Balance beam pumping unit 遊梁式抽油機(jī)woman balance beam 女子平衡木balance beam system 平衡梁系統(tǒng) 返回 balance beam