The portable sampler is used in soilinvestigation. It is made of a frame of aluminum alloy, a spiral anchorage block, an upset by chain driver, and a turn by bevel gear, etc.
便携软层取样器用于土层勘察取样，主要由铝合金机架、螺旋式地锚、链传动加压及伞齿轮回转等部件组成。
2
Through a series of soilinvestigation and fertilizing experiment, the relationship between crop yield and the soil fundamental fertility has been revealed in the clayey carbonate meadow soil.
通过一系列的试验研究，揭示了碳酸盐草甸土基础地力与作物产量的关系。
3
Based on soilinvestigation works of the Nuclear Power Station site in Guangdong province, some key geological questions have been discussed, and the investigation methods have been talked about.