- 對(duì)稱齒條比例
- rack: n. =arrack.
- symmetrical rack: 對(duì)稱齒條
- symmetrical rack proportions: 對(duì)稱齒條比例
- symmetrical: 調(diào)和的; 對(duì)稱的均稱的;相稱的平衡的; 對(duì)稱性的; 對(duì)位的; 均衡的; 兩側(cè)對(duì)稱的; 輸入; 相稱性的; 勻稱的
- be on the rack: 受酷刑, 受折磨, 極度不安
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