这次参加试航的时候，这部分是由一块透明的塑料布保护起来的。
At the time of attendance, this was protected by a clear plastic sheeting.
第一章在明确试航的概念、条件、内容、目的的基础之上，分析了新造船舶试航的特点和试航的法律效果。
Chapterl deals with the features and the legal effect of sea trials on the basis of a clear demarcation has been drawn at the conception, procedure, content and purpose of sea trial.
通过分析深v型滑行艇的实艇在预试航过程中出现的航速问题，在总结实艇试航的各项技术数据的基础上，有针对地分析和研究产生问题的原因。
The author analyzed and studied the speeds of deep-V planning boat in trial, and some approaches to the speed problem arising from the sea trial were put forward on the basis of trial data.
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