concentration criterion 中文意思是什麼

concentration criterion 解釋
分選比
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  • criterion : n. （pl. -ria） （評判等的）標準，準則。
  1. Although the concentration of zinc in both species has not reached the criterion set for zinc hyperaccumulator, their high zinc shoot / root ratio of more than or near 1 suggested that they were zn accumulators

    雖然酸模和戟葉酸模對zn的積累沒有達到超積累標準，但它們大於或接近1的富zn葉根比表明中文摘要它們是zn積累型植物。
  2. Calculation of natural ventilation rates by tracer gas decay method was proposed, and definition of indoor criterion of carbon monoxide concentration limit and the carbon monoxide emission from cars were discussed

    提出了利用示蹤氣體法計算地下停車庫的自然通風量，並論述了如何確定室內一氧化碳允許標準及小汽車的一氧化碳排放量。
  3. The effect of complex groundsill and dam body ' s construction process can be considered conveniently when finite element method is used to analyze dam body ' s stress. but there is no design criterion correspondingly because of the stress concentration that is caused by load at dam heel and dam toe under elastic state. furthermore, its value is easily affected by mesh size

    有限元法分析拱壩壩體應力可以較方便地考慮復雜地基條件和壩體施工過程的影響，但是由於彈性狀態下拱壩壩踵、壩趾處受荷載后的應力集中現象，而且其數值受網格尺寸影響較大，因此至今無與之相應的設計準則。
  4. Stress concentration measure on the model of boiler drum with two nozzles was executed and the testing results were compared with the asme criterion, experiential value and the value of finite element method respectively. this measurement result provides direction for evaluation of stress amplitude

    設計模擬汽包進行應力測試，並與美國asme規范和經驗公式計算值、有限元計算結果進行比較，為后續的低周疲勞壽命估算時交變應力幅值的確定提供依據。
  5. Firstly, the existing extrapolating method of stress concentration factor from measured neighboring stress or strain is reviewed briefly, then, course of gm ( 1, 1 ) model, error source and criterion of examining precision are introduced

    文中首先對已有的應力集中外推方法作了簡要概述，然後，介紹了灰色系統理論gm （ 1 ， 1 ）模型的建模過程、誤差來源及精度檢驗標準。
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