Frequent shallow watering can force roots to come up to the soil surface in search of a drink, encouraging a plant to develop a weak structure.
频繁的浅度浇水会让根泥土表面伸展以寻找水，纵容了植物产生不良好的结构。
It is simpler than the surface structure and its position is to the north, reflecting that shallow layers have undergone the movement from north to south.
它与地表构造比较要简单一些，且位置偏北，反映浅层经历了由北而南的移动。
Shallow surface wave methods are mostly used for investigation of the surface velocity structure in environmental and engineering geophysics in non-desert areas.
浅层面波法调查表层速度结构多用于非沙漠区的工程与环境领域。
This equipment can be used to investigate the structure of shallow layers, ten to several hundred meters below surface.
本仪器用于探测地表以下几十米至数百米范围内的介质构造。
This equipment can be used to investigate the structure of shallow layers, ten to several hundred meters below surface.
本仪器用于探测地表以下几十米至数百米范围内的介质构造。
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