The Zhongyuan oilfield in Henan has polluted over 1,700 hectares of adjacent farmland, according to a preliminarycalculation by Henan Agricultural University in 2002.
根据河南农业大学2002年的初步计算，中原油田污染了附近1700多公顷的农田。
2
The function of automatic formation of a complete system model and to accomplish preliminarycalculation in growing conceptual design phase were put forward and realized.
提出并实现了在生长型概念结构设计阶段自动形成一个完整的系统模型并完成初步计算的功能。
3
To test this preliminary logging code, I'll use a nicely recursive method, an implementation of the Fibonacci sequence calculation, as shown in Listing 4.