1) effective cross sectional area
有效断面积
2) virtual section
有效断面
1.
Several kinds of calculating methods of virtual section are analyzed and compared on the basis of measuring wells in four directions by ultrasonic theory,and the experimental results are presented,which has a certain value of reference for improving testing precision.
对于大直径钻孔的成孔质量检测,孔径、孔斜、偏心距是衡量井筒质量的重要参数,在利用超声原理对井筒进行四向测量的基础上,分析比较了几种有效断面的计算方法,并给出实验结果,对提高测试精度有一定参考价值。
3) effective area
有效面积
1.
Inquiry into effective area of diaphragm of gas decompressor;
气体减压器膜片有效面积探讨
2.
Measuring and studying the effective area of single mode fibers by the variable aperture technique;
用可变孔径法测试研究单模光纤的有效面积
3.
It is insufficient to describe the flowrate characteristic of pneumatic circuit completely only by using one characteristic parameter such as effective area S.
用一个特性参数（如有效面积S值）不能完整表达回路的流量特性用两个特性参数（壅塞流态下的有效面积S值和临界压力比b值）便能完整而科学地表达它气动回路是由许多元件组成的已知每个元件的S值和b值，便可计算出回路的S值和b值本文介绍了这种方法的原理实验结果表明，理论计算值与实验结果吻合很
4) net area
净面积，有效面积
5) specific surface area
有效表面积
1.
The specific surface area of copper in the Cu Zn Al catalyst was determined by pulse chromatography using N 2O as chemical adsorption medium.
以Ｎ２Ｏ为化学吸附介质，在２０℃下采用色谱脉冲法测定Ｃｕ－Ｚｎ－Ａｌ催化剂中活性铜的有效表面积。
6) Efficient leaf area
有效叶面积
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条