projected blade area 桨叶投影面积
projected-blade area ratio 投影盘面比
blade area ratio 桨叶盘面比 ; 叶面比
total blade area 叶片总面积
propeller-blade area 螺旋桨叶面积 ; 螺旋桨桨叶面积
airscrew blade area 螺旋桨叶面积
main rotor blade area 旋翼桨叶面积
projected propeller blade area 螺旋桨叶投影面积
blade area texture 黑区组织
Therefore, it has applying value for calculating blade area, which can be applied in agricultural researches and productions extensively.
因此，对于准确计算叶面积 具有重要的应用价值，在农业科研及生产中可以广泛应用。
Therefore, the static mixer with large blade area had the highest mixing ratio of the process gas and air in the natural gas purification process.
因此，叶片面积大的静态混合器对天然气净化处理工艺中的过程气与空气的混合率最高。
The results show that the reason why surge happened is that flow area of nozzle ring and blade was decreased.
结果表明：增压器喷嘴环和涡轮叶片流通面积减少是涡轮增压器喘振的主要原因。
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