The land of mulberry fields, tea plantations, orchards, nurseries of young plants, forest land, reed land, natural and man-made grassland and other lan are not included in cultivated land.
但不包括属于专业性桑园、茶园、果园、果木苗圃、林地、芦苇地、天然或人工草地面积。
We use the scientific computational lan guage MATLAB to program and calculate the shaped steel columns via man -machine conversation, and quickly obtain correct results of design.
应用科学计算语言MATLAB编程，在人机交互下计算型钢压杆，迅速得到正确的设计结果。
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