To solve related dredging problems and to analyze the effectiveness of jet flow scouring for the Tongguan stretch of the Yellow River, jet flow scouring experiments were made in laboratory flumes.
为解决黄河潼关河段射流清淤工程有关技术问题，分析其冲沙效果，利用室内水槽进行了静水、动水条件下射流冲刷试验。
About 45 minutes later there were a convoy of helicopters a couple planes and a military jet in the area and surrounding area scouring the sky until shortly after sunrise.
约45分钟后，日出后不久，有一个车队，直到直升机的一对夫妇飞机和军用飞机在该地区及周边地区的冲刷天空。
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