本文进一步提出了蓟县地区中元古界雾迷山组中存在着风暴沉积的证据。
This paper, however, presents evidence of the presence of storm deposits in the middle Proterozoic Wumishan Formation in the Jixian area.
据统计船舶碰撞事故中50%以上是在雾航情况下发生的，因此，如何提高雾航安全是航海界普遍关心的问题。
According to statistics, 50 % of all collision accidents are taken place in fog. Therefore, how to improve the navigation safety in fog has attracted the common concerning of navigation circle.
据统计船舶碰撞事故中50%以上是在雾航情况下发生的，因此，如何提高雾航安全是航海界普遍关心的问题。
According to statistics, 50 % of all collision accidents are taken place in fog. Therefore, how to improve the navigation safety in fog has attracted the common concerning of navigation circle.
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