均勻系數；均勻度
Obtained numerical simulation results of flow fields include the pressure drop and the non-uniformity coefficient on the outlet.
計算了整個排氣蝸殼流場分布狀況，從而能夠獲得排氣蝸殼壓力損失和出口段的速度不均勻度。
In order to evaluate the foamed aluminum structure, the uniformity coefficient (K) and its expression have been given according to the relative variance.
根據相對方差理論，提出泡沫鋁孔徑均勻度系數K的概念和其表達式，以評價泡沫鋁結構特性和發泡效果。
Overlapped sprinkler water distributions were tested to determine the relationship between Distribution Uniformity ( DU ) and Christiansen Uniformity Coefficient ( CU ).
利用多噴頭組合噴灑試驗研究了分布均勻系數DU 與噴灌均勻系數CU 之間的關系。
In the second part of the thesis, an experimental study on the effect of embedded depth on the uniformity coefficient of irrigation and the distribution of soil moisture was made.
第二部分對滲灌管埋深對灌水均勻度和土壤水分分布的影響進行了試驗研究。
Working pressure, with a small infection on stepping angle, positively influences wetted diameter , uniformity coefficient and stepping frequency.
工作壓力影響射程、均勻系數和步進頻率，對步進角度影響不大；
Field experiments were conducted to observe winter wheat response to nonuniform sprinkler irrigation under various Christiansen uniformity coefficient (CU) levels ranging from 62% to 82%.
利用田間試驗研究了不同噴灌均勻系數條件下的冬小麥耗水規律及噴灌蒸發漂移損失。
Changes of sidewall sweep angle and cowl position can influence inlet performance such as mass capture, total pressure recovery coefficient and uniformity of isolator exit flow field.
側闆後掠角大小和整流罩位置變化時，對進氣道的質量捕獲、總壓恢複系數和隔離段出口流場的均勻性等都有一定的影響。
Reuse of sheared sand material may produce large error in SS strength for sands with high coefficient of uniformity (Cu ).
對于高均勻系數砂土 ，重複使用砂樣進行剪切試驗可能會導緻較大的試驗誤差 ；
In the situation of that coefficient of uniformity is bigger than 5, modulus of resilience reduces before it increases as coefficient of uniformity increase;
在不均勻系數大于5的情況下，回彈模量隨不均勻系數的增大，先減小後增大；
In the situation of that coefficient of uniformity is bigger than 5, degree of compaction reduces before it increases as coefficient of uniformity increase;
不均勻系數在大于5的情況下，壓實度隨不均勻系數的增大，先減小後增大；
With the increasing of directional backcrossing generationstransferred, variation coefficient and uniformity degree of different hybrid groupsdecreasing.
結果表明，隨着定向回交世代的增多，雜交種群體内的變異幅度減小，群體整齊性逐漸提高。
In the meanwhile, it puts forward to correct the calculation by hydraulic coefficient of non-uniformity and achieves reasonable results.
同時，提出了用水力不均勻系數來糾正這一現象，得到了合理的結果。
A method is introduced for testing stray light coefficient, vignetting coefficient and image surface uniformity optical system with large aperture and long focal length.
叙述一種用于測試大口徑、長焦距光學系統雜光系數、漸暈系數、像面照度均勻性等光學參數的檢測方法。
The dripper flow variation rate, flow deviation coefficient and the emission uniformity for the emitter are calculated by using computer program under the four conditions.
然後借助計算機模拟計算出上述三種因素獨立作用及共同作用下流量偏差率、偏差系數、均勻度等指标；
The concept of uniform coefficient which could characterize the uniformity and continuity of the line and surface tactility was proposed.
提出均布系數的概念表征線面載荷的均勻性和連續性。
Premixing enzymes and calcium salt to manufacture bread additive, and its ash content was tested result in coefficient of variability. This coefficient could reflect mixed degree of uniformity o…
采用酶制劑與鈣鹽預混合配制面包添加劑，測定灰分含量，其變異系數能反映酶制劑混合均勻度。
Infrared lamp arrays have long been adopted as primary simulation equipment of thermal flux, considering the effect of cover coefficient of infrared heating cage on flux uniformity.
在以往的試驗中，考慮到加熱籠覆蓋系數對熱流密度均勻性的影響，通常選用紅外燈陣作為主要的外熱流模拟裝置。
In this paper the static pressure uniformity in the static pressure chamber of supply air duct is stu***d by means of experiments, and its coefficient is derived.
對不同類型的空調靜壓送風系統進行了送風均勻性測試，測試結果表明，傳統的空調靜壓送風道送風均勻性并不理想。
|homogeneity coefficient/evenness degree;均勻系數；均勻度
均勻系數（Uniformity Coefficient）是工程地質學與土力學中用于量化顆粒材料（如土壤、砂石）粒徑分布均勻性的關鍵指标，其定義為顆粒分布曲線上累積百分比為60%的粒徑（D60）與累積百分比為10%的粒徑（D10）的比值，計算公式為：
$$
Cu = frac{D{60}}{D_{10}}
$$
該系數由美國工程師艾倫·哈贊（Allen Hazen）于1892年提出，主要用于評估土壤的滲透性和過濾性能。若均勻系數較低（接近1），表明顆粒尺寸分布均勻；若系數較高（如大于15），則說明粒徑差異顯著，可能含有粗細顆粒混雜的現象。
在工程實踐中，均勻系數與曲率系數（Curvature Coefficient）結合使用，可進一步分析級配特性。例如，美國材料與試驗協會（ASTM）在标準D2487中規定，砂土的均勻系數需滿足特定範圍以保證工程穩定性。此外，水利工程中常通過均勻系數篩選反濾層材料，以防止水土流失（參考《岩土工程手冊》）。
研究顯示，均勻系數與土壤的壓縮性和抗剪強度存在相關性。例如，密歇根大學的研究指出，高均勻系數的砂土在動态荷載下易發生液化，需采取加固措施。這一參數也被國際土力學與基礎工程學會（ISSMGE）列為土體分類的核心指标之一。
“uniformity coefficient”（均勻性系數）是用于衡量某系統或材料中分布均勻程度的指标，常見于工程和自然科學領域。以下為詳細解釋：
均勻性系數通常通過統計方法計算。例如在灌溉中，公式可能涉及測量點的水量差異：
$$
C_u = frac{text{平均水量}}{text{标準差}}
$$
（具體公式因場景而異，需參考實際标準。）
如需更專業的定義（如土壤顆粒分析中的均勻系數），建議查閱相關領域的權威文獻。
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