Water quality has been a concern for the Olympic sailing events.
奥运帆船项目对水质是很要求的。
The quality of shaft alignment is very importance in ensuring the long term appropriate running of shafting system and crucial in keeping the sailing vessel in the set course.
船舶轴系校中的质量，对于确保轴系长期正常地运转非常重要，也是保证船舶正常航行的关键。
Firstly, H-value rule which can evaluate quality of portfolio was given under the condition of permitting short-sailing for the first time.
首先，在允许卖空的情况下，第一次给出了评价证券组合优劣的H值准则，然后在H值意义下进行优良证券组合的筛选。
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