变截面流量计 variable-area flow meter
可变截面流量计 variable area flowmeter
金属截面积定量变化率 LMA
可变截面积流量 Variable Area
横截面数据：成分数据只测量一次。这展示你的变量在一个时间点的快照（如：市场调查）。
Cross-Sectional: The sample of elements is measured only once. This shows you a snapshot of variables at a point in time (e. g. , market survey).
文中以拉索张力和杆件截面为设计变量，提出了预应力网架结构的优化模型，并给出了具体的优化设计步骤。
With optimization of pull cables and element sections as design variables, an optimization model and design approach for pre-stress space tress structures were obtained.
基于统一设计变量方法，实现了导管架海洋平台在动冰载荷作用下的截面和形状动力优化设计。
Based on the unified design variable method, the shape and sizing optimization design of jacket platform with dynamic ice-load is investigated.
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