在确知水力裂缝方位的情况下，采用相应的矩形方式布井将会对提高可采储量和天然气的采收率起重要作用。
It will act as an important effect to take rectangular pattern for improving recoverable reserves, recovery factor of natural gas if the orientation of hydraulic fracture has been defined.
平板裂缝天线可满足雷达系统对天线增益高、副瓣低、体积小、重量轻的要求，所以它的设计和制造已受到普遍关注。
The design and manufacture of planar slotted array antenna have been widely interested for its high gain, low sidelobe, compact size, and light weight which can meet requirements of radar system.
利用岩石张裂时发出的声波在岩石中的传播原理，可准确测出裂缝的形态方位和延伸长度。
Making use of the principle that the sonic wave made by the rock open fracture spread in the rock, can accurately test the crack's appearance directions and extend length.
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