松面是皮革的一种缺陷，指皮革表面层松弛或粒面层与网状层有轻度分离的现象。
... 松卷unwinding; winding off; reeling off 松面（单板）loose side; slack side 松散纹理loosened grain ...
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本文讨论了在黄牛鞋面革生产过程中产生松面的原因，并经过多年的生产实践，摸索出解决松面问题行之有效的技术措施。
The reason of loose grain forming in production of cattle hide upper leather was discussed in this paper, technical measures of solving the problem of loose grain were found out in years′ practice.
另一方面，对马拉松石油公司而言，其任务是证明石油市场是区域性的，两者的合并会导致油价的大幅度波动。
For Marathon, on the other hand, the task was to demonstrate that the markets for oil were regional and that hence the merger was likely to have a great impact on prices.
如果你正在为马拉松比赛训练，不要抱有露个面就能轻松跑完全程的期望。
If you're training for a marathon, you wouldn't expect to turn up and just be able to run it.
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