OBJECTIVE To prepare vincristine sulfate liposomes by active loading method, and study the influence of different factors on the entrapment efficiency.
目的采用主动载药法制备硫酸长春新碱脂质体，考察包封率的影响因素。
On the basis of optimization of die cast parameters, the effect of slow shot velocity on air entrapment during die cast was studied further according to slow shot theory.
在优化压铸工艺参数的基础上，借鉴慢压射理论，进一步研究了慢压射速度对压铸过程卷气的影响。
Neural network BP training algorithm based on gradient descend technique may lead to entrapment in local optimum so that the network inaccurately classifies input patterns.
基于梯度下降的神经网络训练算法易于陷入局部最小，从而使网络不能对输入模式进行准确分类。
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