... 不变性characteristic of true 积聚性characteristic of concentration 类似性characteristic of similarity ...
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The groundwater in Karst spring basin has a characteristic of concentration drain, it is similar to unsteady orifice outflow in fluid mechanics.
岩溶泉域地下水具有集中排泄的特点，它类似于流体力学中的非恒定孔口出流。
Objective: To observe the characteristic of concentration change of serum neuron specific enolase (NSE) in neonates with hypoxic ischemic encephalopathy (HIE) in24, 48hours after birth.
目的：观察新生儿缺氧缺血性脑病(HIE)患儿生后24小时、48小时血清神经元特异性烯醇化酶(nse)浓度改变特征。
The dynamic characteristic of concentration change on plates of batch rectification column in no reflux start up process and in no reflux period of pulse operation process have been calculated.
建立了间歇精馏无回流操作过程的数学模型，采用四阶龙格库塔法求解初值问题，计算无回流开工过程及间歇精馏脉动操作过程中无回流周期内各塔板浓度变化的动态特性。
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