楔形地形是工程中常见的一类场地。
Wedge site is a sort of common topography in practical project.
传统羽毛球网架，一类需要埋柱拉线，只能局限在固定场地；
The traditional badminton net &post set, one kind needs to bury the post which can only limit in the fixed location;
传统羽毛球网架，一类需要埋柱拉线，只能局限在固定场地；
The traditional badminton net &post set, one kind needs to bury the post which can only limit in the fixed location;
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