The fourth chapter introduces the 14 banks in this collection of stock price data, and based on the calculation of the stock index and the rate of return sequence.
第四章引见了本所搜集的14家银行的股票价钱数据，并基于此盘算了其股票指数及收益率序列。
The data collection in matching design between rudder stock and rudder horn of single rudder pintle semi-balanced rudder is massive, and its calculation and optimization is complex.
单舵销半平衡舵的舵杆与挂舵臂的匹配设计需要提取的数据量较大，计算及优化过程也较为复杂。
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