- spindle extension
- 延长: lengthen; extend; prolong; p ...
- 轴: axle; shaft
- 长轴: [数学] major axis; long axis; macro axis; prolate axis
- 延长: lengthen; extend; prolong; prolongate; elongation; extension; dwell; prolongation 延长有效期 prolong the period of validity; 条约延长十年。 the treaty has been prolonged for another ten years. 通过协议可以延长期限。 period may be extended upon expiration (through agreement).; 延长号 [音乐] pause; 延长线 extended [extension] line
- 半长轴: major semi-axis; semimajor axis
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