闭壳核具有球对称性。
采用前驱体微球法制备闭孔聚酰亚胺泡沫，并对其吸声性能进行了研究。
The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acoustic absorption properties were tested.
方法用血管内球囊或弹簧圈闭塞椎动脉治疗9例颅内后循环不可夹闭动脉瘤。
Methods 9 patients with posterior circulation intracranial unclipped aneurysms were treated with detachable balloons or GDCs to occlude proximal vertebral artery of aneurysms.
氧化铝空心球ALUMINABUBBLE 氧化铝空心球是由电熔法制得的空心球状隔热材料 。它的特点是质轻闭孔耐高温。
The alumina bubble is a hollow spherulitic heat-insulating material, which is made by electro-melted method. It is noted for its lightweight, heat-resistance, and close pore.
氧化铝空心球ALUMINABUBBLE 氧化铝空心球是由电熔法制得的空心球状隔热材料 。它的特点是质轻闭孔耐高温。
The alumina bubble is a hollow spherulitic heat-insulating material, which is made by electro-melted method. It is noted for its lightweight, heat-resistance, and close pore.
应用推荐