全部

1·Positive clone were subcloned to get monoclone cell lines by limit dilution, repeat 3 times, then we got two positive monoelone cell lines named:2E8,3C6.

采用有限稀释法对阳生孔进行亚克隆，重复3次，得到两株单克隆细胞株：2E8、3C6。

2·The upper-limit of the positioning dilution of precision(PDOP) is an important index to design of a navigation constellation and evaluation of its performance.

定位精度因子（PDOP）上限取值是导航星座设计及其性能评价的基本依据。