main structural member

基本解释

The connection optimization between circle members and main trusses can also reduce member force based on roof structural integrity.
在保证结构整体性的前提下，对环向杆件与主桁架连接以及内环连接形式进行优化，也降低了杆件应力。
The main oil-bearing horizons of the No. 2 structural belt of the Nanpu subbasin are sandstone of the First Member of the Paleogene Dongying Formation and Ordovician limestone.
南堡凹陷南堡2号构造带主要含油层段为古近系东营组东一段砂岩及奥陶系灰岩。
The economic development of the EU member states is imbalanced and the structural funds, the main body of EU's regional development funds has worked well in adjusting regional imbalances.
欧盟各成员国经济发展不均衡，而结构基金作为欧盟区域发展政策的主体，在协调区域发展方面取得了很好的效果。