density proportional 中文意思是什麼

density proportional 解釋
與密度成比例的
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  • proportional : adj （成）比例的；相稱的，平衡的，調和的 （to）。 a proportional number 比例數。 a proportional e...
  1. Very roughly, the insulting value of a concrete is inversely proportional both to its density and to its strength.

    很近似地說，混凝土的隔熱值與其密度和強度均成反比。
  2. Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in

    同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。
  3. The variation of the film composition can be monitored by using the method of spectrum analysis during the film deposition ( for the intensity of the persistent line is proportional to the particle density of the element in the vacuum chamber ). the measurement of the transmission spectrum of the film on a transparent substrate can be used to calculate the film parameters, such as refractive index, extinction coefficient and the thickness of the film. therefore, the combination of the two methods would be helpful to on line monitoring the film constituents and the optical paramenters in the preparation of thin films

    在制備薄膜的過程中，利用光譜分析的方法，以放電光譜特徵譜線強度的變化來反映相應物質成分的變化，以連續光譜光源發出的光透射過薄膜的透射率的變化，來反映薄膜的厚度、折射率、吸收系數等光學參數的變化，從而達到在制膜過程中，對薄膜的成分、厚度等參數進行在線監控的目的
  4. If so, its temperature should be related to its mass and density and therefore to its luminosity ; specifically, the luminosity should be proportional to the square of the temperature

    果真如此的話，則氣團溫度應該與其質量、密度甚至光度有關；明確地說，光度應與溫度的平方成正比。
  5. Next, consulting current feedback control, the flux feedback control algorithm is designed. this algorithm has two loops, the inner loop is flux feedback loop, the outer one is air gap feedback loop ; the outer loop uses pid controller whose output is expected flux density, the inner uses the proportional or pi controller whose output is the magnet control voltage

    其次，參照電流環控制的串級思想，設計出了基於磁通反饋的懸浮控制演算法，該演算法也採用雙環控制，內環為磁通環，外環為位置環;外環採用pid控制器，輸出為期望磁通密度，內環採用比例或比例積分控制器，輸出為電磁鐵控制電壓。
  6. The analysis indicates that the maximum deflection is directly proportional to density and the square of span, and inversely proportional to stress, but independent of diameter and elastic modulus

    分析結果表明：由於絲線長徑比很大，絲線的最大撓度跟密度以及跨度的平方成正比，與所受的應力成反比，而同絲線的直徑的具體數值和材料的剛度無關。
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