低密度数据系统LDDS ？
The erasable optical disk with high recording density, high stability, high data transfer rate, high carrier-noise ratio and low error rate arc the main points in the research and development.
当前的研究与开发的重点是具有高记录密度，数据传输速率快、稳定性好、载噪比大和误码率低的可擦型光盘存储材料。
High Density Resistivity is widely used in engineering geology exploration because of such advantages as its abundant data, low cost, good anti-jamming and et al.
高密度电法以其数据量丰富、成本低、受场地干扰小等优点而广泛应用于工程地质勘察中。
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