mass fraction 中文意思是什麼
mass fraction
解釋
質量分率-
The result showed that non - enzymatic browning of greengage juice could be inhibited and natural primrose yellow could be kept in the plasming of greengage by adding 0. 2 % ( mass fraction ) sodium erythorbate ; non - enzymatic browning of greengage juice was restrained more remarkably by vacuum concentration than by normal pressure concentration ; the non - enzymatic browning of greengage juice increased and the color darkened with the increase of concentration and processing temperature ; non - enzymatic browning of greengage juice in the storage could be inhibited under the condition of low temperature, and frozen storage was the best store method of greengage concentrated juice
摘要結果表明：在青梅果打漿時加入質量分數為0 . 2 %的異抗壞血酸鈉，可防止果汁氧化褐變而保持天然淡黃色澤；減壓濃縮較常壓濃縮明顯抑制了非酶褐變的發生；隨著果汁含量和加工溫度的提高，非酶褐變加快，色澤加深；低溫有利於青梅濃縮汁的貯藏，冷凍貯藏是最佳的貯藏條件。 -
Sodium hydroxide for chemical fiber use - determination of sulphate mass fraction - turbidimetric method
化纖用氫氧化鈉中硫酸鹽含量的測定比濁法 -
It is shown that paraffin can be uniformly absorbed into the pore network of expanded graphite, that expanded graphite remains its vermiform structure in pcms, that the phase - change temperatures of composite pcms are similar to that of paraffin, and that the latent heat of composite pcms is are based on the mass fraction of paraffin in the composite materials
結果表明：膨脹石墨吸附石蠟后仍然保持了原來疏鬆多孔的蠕蟲狀形態，石蠟被膨脹石墨微孔所吸附；復合相變儲熱材料的相變溫度與石蠟相似，其相變潛熱與基於復合材料中石蠟含量的潛熱計算值相當。 -
When the water mass fraction is higher than 50 %, its ec is determined only by the total ion content without connection with the moisture
當基質質量含水率大於50 %后，電導率主要受基質內離子總量的影響，可忽略水分的影響。 -
When the water mass fraction of the substrate is about 4500, its ec can be predicted accurately by both the power function as well as the linear function models
控制基質質量含水率在45 %左右的條件下，用冪函數和線性函數預測基質電導率都獲得了較高的精度。 -
We can get many physical parameters through indicator diagram acquired in the experiment. such as indicator work, mean indicated pressure, maximal pressure and corresponding crank angle, maximal rate of pressure rise and corresponding crank angle and mass fraction burned, heat release rate, etc. these physical parameters can analyze and show primary in - cylinder combustion process in engine
通過實測的示功圖，經過計算整理可以獲得諸如指示功、平均指示壓力、最高燃燒壓力及其對應曲軸轉角、最高壓力升高率及其對應曲軸轉角、已燃質量分數、燃燒放熱率等物理量，可供進一步分析和揭示發動機缸內燃燒過程。 -
For the conditions shown, maximum performance occurs at an additive mass fraction of 23%.
在所給定的條件下，最大性能是添加劑質量分量的23處。 -
Mass fraction of surfactants sdbs is 0. 02
分散劑十二烷基苯磺酸鈉質量的分數為0 . 02 。 -
Research on the relation of mass fraction of micro - aggregation and nutrient factor in pteridium aquilinum ' s producing area
野生蕨菜產地土壤微團聚體質量分數與養分因子關系研究 -
Ambient air quality - standard gravimetric measurement method for the determination of the pm 2, 5 mass fraction of suspended particulate matter
環境空氣質量.用標準重力測量法測定懸浮顆粒物的pm2 . 5質量系數 -
The convective term is solved by ausm + ( a sequel to ausm which means " the advection upstream splitting method " ). the 7 species 8 steps model and 7 species 7 steps model of hydrogen / air is used in the hydrogen reacting flowfield, the 9 species 5 steps model of methane, the 10 species 10 steps model of ethane and the 10 species 13 steps model of kerosene are used in the hydrocarbon reacting flowfield, the results of the distributions of velocity, mach number, pressure, static temperature, total temperature, species mass fraction and the combustion efficiency are gained, and the numerical results of the pressure of hydrogen and methane are compared with those of the experiment
計算中通量項採用ausm +通量分裂格式，氫反應流場採用氫/空氣的七組元八方程模型和七組元七方程模型，碳氫反應流場採用甲烷的九組元五方程模型、乙烯的十組元十方程模型和煤油的十組元十三方程模型，得出了超燃發動機燃燒室流場的速度、馬赫數、壓力、靜溫、總溫和組元質量分數分佈及燃燒效率等性能參數，其中氫和甲烷的計算壓力分佈與實驗結果進行了比較。 -
Optimum dispersant mass fraction of - al2o3 aqueous suspension investigated by viscometer
3水懸浮體系的最佳分散劑質量分數 -
Behavior of flow and heat transfer in venturi tube was simulated numerically and the relationships of outlet temperature, mass fraction of vapor and pressure loss with spraying flow rate were obtained
當噴射流量小於臨界噴射流量時，出口爐氣的溫度和水蒸氣質量分數隨噴射流量的增大分別呈線性下降和上升關系；當噴射流量大於臨界噴射流量時，爐氣降溫和水蒸氣質量分數增長不顯著。 -
Composite paraffin / expanded graphite phase - change materials ( pcms ) respectively containing 50 % ( mass fraction, below the same ), 60 %, 70 % and 80 % of paraffin were prepared by using paraffin as a latent heat - storage material and expanded graphite as a supporting matrix
摘要以有機物石蠟為相變材料、膨脹石墨為支撐結構，利用膨脹石墨的多孔吸附特性，制備出了石蠟含量分別為50 % （質量分數，下同） ， 60 % ， 70 %和80 %的石蠟膨脹石墨復合相變儲熱材料。 -
With 5 % - 15 % ( by mass fraction ) ethyl - benzene as diluent, styrene - acrylonitrile random copolymer was synthesized by means of the continuous bulk polymerization of styrene and acrylonitrile initiated by heating
摘要以苯乙烯、丙烯腈在添加質量分數為5 % ~ 15 %的乙苯作稀釋劑的條件下，進行熱引發連續本體聚合，合成了無規苯乙烯丙烯腈共聚物。 -
In the present experimental work i tried to learn some about the absorption phenomenon by allowing superheated ammonia vapor, which is existed in a cylinder, to flow into a test cell to be absorbed into ammonia liquid mixture with certain initial ammonia mass fraction
在本實驗研究中，首先在氨蒸汽罐中制備好過熱氨蒸汽，然後將過熱氨蒸汽注入到實驗件主體，在其中氨蒸汽被一定初始質量濃度的氨水混合液吸收。對該吸收現象現象進行了研究。 -
Materials and articles in contact with foodstuffs - plastics - polymeric additives - test method for the determination of the mass fraction of a polymeric additive that lies below 1000 daltons
接觸食品的材料和物品.塑料.聚合添加劑. 1000道爾頓以下的聚合添加劑的質量系數測定的試驗方法 -
At the conditions with the same fuel injection quantity per cycle and the same engine speed, with the increase of the additive mass fraction in the fuel, the ignition and heat release timings brought forward, the peak of heat release rate increased and the operating range at low engine load was enlarged obviously. however, excessive additives will make the engine be prone to knock, run rudely and shorten the operating range at high engine load
在相同循環噴油量和相同轉速的條件下，隨著添加劑質量分數的增加， hcci著火和燃燒放熱提前，燃燒放熱峰值提高，低負荷工況范圍明顯拓寬，但過高的添加劑質量分數會使得發動機爆震，工作粗暴，導致高負荷工況變窄。 -
At the condition of constant salt content ( total ion content ), if the water mass fraction in the substrate is lower than 50 %, its ec is determined by both the salinity and the moisture of the substrate
試驗結果表明：在保持基質鹽分（離子總量）水平不變的條件下，若基質質量含水率低於50 % ，則電導率值受基質內離子含量和基質水分的雙重影響。 -
Testing of liquid fuels ; determination of the vanadium and nickel content with a mass fraction 1 mg kg ; determination by atomic absorption spectrometry after incineration
液體燃料檢驗.質量分率大於1 mg kg的釩和鎳含量的
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