大可纶纤维具有较好的阻燃性能。在点燃聚酯纤维时，纤维会熔化并在火焰作用下收缩，最终形成球状。冷却后熔球具有较高的硬度。
Dacron polyester fibers have a high resistance to burning. They tend to fuse and shrink away from the flame, forming a bead that is very hard after cooling.
同时，本文还对PBGA钎料球激光重熔进行了试验研究。
At the same time, experiments on PBGA solder ball laser reflow were carried out.
介绍了激光重熔在面阵列封装钎料凸点成形中的研究进展，并且对PBGA共晶钎料球激光重熔进行了工艺研究。
Research status of laser reflow on solder bump forming of area array packages are introduced, and experimental analysis on laser reflow of PBGA solder ball is performed.
但若P元素过量时，则会因熔体粘度过低而导致球化现象。
Whereas, with excessive P addition, an extremely low melt viscosity causes balling phenomena.
本论文研究利用CO_2激光作为热源加工制备熔锥光纤耦合型光学球微谐振腔器件。
In this paper, we had studied the CO_2 laser fabrication of microsphere resonators coupled by biconical tapered fibers.
并对球型熔铁催化剂的催化性能进行了考察。
The catalytic property of tne ball-type melted iron catalyst is also surveyed.
采用熔盐的静电硬球模型，对熔盐系的位形积分和有关熔盐物性作量刚分析。
Based on electrostatic potential hard sphere model, the dimensional analysis of the configurational integral of molten salts and related physical properties has been made.
实验发现，在液相粘度较高、表面张力大，熔体材料不浸润固相颗粒和基板等因素的影响下，烧结过程中出现了球化现象。球化的出现妨碍了直接金属激光烧结成形的顺利进行。
During the laser sintering, due to the large liquid phase viscosity and surface tension, the balling effect occurred when the molten did not wet the solid metal particle and the underlying substrate.
首先导出聚集硬球分子模型状态方程，并应用该方程计算五种金属熔体饱和气的密度，取得满意的结果。
Then, the densities of saturated vapor of 5 melting metallic substances are calculated by using the above equation of state, giving quite satisfactory results.
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