While studying in Chicago, in 1928 he discovered an asteroid, which was given the provisional designation 1928 UF and later the number 1125.
1928年张钰哲在芝加哥学习时发现了一颗新星，临时将其命名为1928UF，后来编号为1125。
Based on the process of the experiment, analysis about the difficulties in design a SAR with DBF technologies is presented in this paper; provide some reference for the designation later.
并根据实验结果进行了可行性分析及工程实现难点分析，为今后的实际工程实现提供了参考方案和设计依据。
Based on the process of the experiment, analysis about the difficulties in design a SAR with DBF technologies is presented in this paper; provide some reference for the designation later.
并根据实验结果进行了可行性分析及工程实现难点分析，为今后的实际工程实现提供了参考方案和设计依据。
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