The interfacial reactions enhance the wettability and promote the spontaneous infiltration process.
界面反应的存在提高了润湿性，促进了无压自发浸渗。
The porosity gradient of porous aluminium is mostly affected not only by the spontaneous stacking density of granules, but also by the infiltration pressure gradient and solidification sequence.
多孔铝合金的孔隙率梯度主要是由渗流驱动压力梯度与凝固顺序所决定，而颗粒的自然堆积密度影响相对较小。
Objective】To approach the possibility of doing the operation of one stage bilateral thoracoscopic sympathetic blocking(OSBTSB)under local infiltration anesthesia and spontaneous breathing.
目的探讨局部麻醉下行一期双侧胸腔镜胸交感神经夹闭术的可能性。
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