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Pressure is force per unit area. 压力就是电单位面积上的力。
per unit area concentration 单位面积浓度
The drag is a force per unit area of the layer. 拖力是流层单位面积的力。
The intensity of light per unit area of its source. 亮度每单位发光区的光的强度。
Large capacity per unit area, high screening efficiency. 单位面积产量大，筛分效率高。
Ways of Improving Crop Yield Per Unit Area and the Countermeasures. 提高作物单产的途径与对策。
Hole Density: The number of holes per unit area on a PCB. 上单位面积上的孔数。
Population density (people per unit area) is an example. 比如人口密度就是指单位面积的人口数量。
Replace the words “areic mass” with “mass per unit area”. 用“每一单位面积的质量”代替“整块面积的质量”
The analysis includes the concentration ratio at the base of a GCL, advective and diffusive mass flux, and total accumulated contaminant mass through the liner per unit area. 从衬垫底部浓度比、对流和扩散通量、污染物累积运移量等方面，对污染物在GCL中的运移进行了计算。
Hotter objects also radiate more energy per unit area than cooler objects. 较高温的物体每单位面积所辐射的能量亦较多。
The per unit area yield of ginned cotton has increased by 10% over last year. 皮棉的单位面积产量比去年增加了10%25。
We synthesize catalyst in different concentration, not only to compare with the numbers of carbon nanotube per unit area in different temperature, but also to observe the grow phenomenon. 过程中调配了几种浓度不同的催化剂，除了比较在不同温度下单位面积的碳管数量，更加以观察其成长现象。
There are two main components that contribute to livestock output per unit area under grazing conditions. 在放牧条件下，决定单位面积的牲畜产量，有两个主要因素。
The luminous flux per unit area at any point on a surface exposed to incident light. 照度受光照射的表面上任一点单位面积上的通光量
The amount or degree of strength of electricity,light,heat,or sound per unit area or volume. 强度程度单位电、光、热或声的强度的量或程度。
Increasing the yield per unit area on the existing cultivated land has potential. 提高现有耕地单位面积产量有潜力。
There is potential for increasing the yield per unit area on the existing cultivated land. 提高现有耕地单位面积产量有潜力。
Test method for gravimetric determination of mass per unit area of galvanized coatings steel products. 本标准规定了钢产品单位面积上镀锌层质量试验方法的原理、试验溶液、试样、试验步骤、结果计算、再现性及试验报告。
The total dislocation length per unit volume of material; alternately, the number of dislocations that intersect a unit area of a random surface section. 材料单位体积内的位错线的总长度，或者在一个随机切面上的单位面积内切断的位错根数。