在滩浅海地震勘探中，由于海水深度和潮流的变化，在水面上按照预定位置沉放的检波器，在海底不可能放置在预定的位置。
Because of the variation of seawater depth and tide, the detector placed in the seafloor cannot be located in the designed position during seismic exploration in the paralic zone.
突出煤层顺层长钻孔的施工由于受到施工技术的限制达不到预定的深度，影响了瓦斯抽放效果。
The drilling operation of long holes along outburst coal seam usually can't reach their preset depth since it is handicapped by drilling techniques, which will thus influence gas drainage effect.
此技术探测器还具有防水功能，在淡水和海水中的防水深度能达到10英尺，并可以提供多种功能去帮助从各种杂乱目标中识别和分离出预定目标。
Waterproof to a depth of 10 feet in fresh and saltwater environments, the detector offers multiple features to help identify and separate desired targets from trash targets.
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