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| 21. | Strain with other difference of method is it filter medium to be space very much little to lie inning |
| 微滤与其它方法的区别在于过滤介质空隙特别小，借助筛网回转的离心力，在较低的水力阻力下，具有较高流速性，截留住悬浮固体。 |
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| 22. | This paper introduce development of integrity monitoringtechnology on WADGPS, specify ERAIM method which |
| 介绍了广域差分GPS系统完备性监测技术的一些进展，详细叙述了应用卡尔曼滤波和观测值历史记录的ERAIM算法，同时也给出了完备性监测技术的其他一些方法，如辅助RAIM算法和中值选择法、卫星方法等。 |
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| 23. | In the research, the two-apex method was used to filter soil background, the weed was recognized depending |
| 研究中采用双峰法滤除了土壤背景，根据投影面积、长、宽识别出了杂草，并且根据杂草投影面积确定出了杂草密度。 |
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