经过长期反复研究、实践，近日龙矿集团自主研制的新式矿车轮对液压拆装机在洼里煤矿正式投入使用。
After a long time in research and practice, Dragon Mining Group has recently developed new mineral wheel independent hydraulic changer on mine was put into use in the Wali.
目的研究人胚胎海马神经干细胞体外长期培养的条件和其在自主分化条件下的分化能力和分化特点。
Objective To study the conditions of in vitro culture and the features of differentiation of neural stem cells from human embryonic hippocampus.
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