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- Abstract: Fabricating methods often used for solder ball in the BGA package were reviewed.UDS (uniform droplet spray), which is widely investigated was analyzed. 摘 要: 综合介绍了BGA封装使用锡球常用制造方法,分析了研究较多的均匀颗粒成型技术的原理。
- uniform droplet spray 均匀液滴喷射
- Computation of jet velocity of uniform droplet spraying 均匀液滴喷射成球法的射流速度计算
- The reagent slurry is injected through rotary atomizers or dual-fluid nozzles to create a finer droplet spray than wet scrubber systems. 试剂泥浆通过转台式雾化器或双重流体喷管进行喷射,形成比湿式净化器系统更优良的滴状喷雾。
- The reagent slurry is injected through rotary atomizers or dual-fluid nozzles to create a finer droplet spray than wet scrubber systems . 试剂泥浆通过转台式雾化器或双重流体喷管进行喷射,形成比湿式净化器系统更优良的滴状喷雾。
- high - voltage electrostatic droplet spray 高压静电液滴喷射法
- The tranafer and spatter of big droplets show obvicusly periodic characteristic, and the small droplet spray transfer and spatter exist through whole welding. 大颗粒熔滴的形成、长大,直到发生过渡、爆炸或偏飞具有明显的周期性特征,而小颗粒的喷射过渡或飞溅则伴随焊条燃烧全过程。
- Arc spectrum signals of droplet spray transfer in MIG welding MIG焊熔滴过渡的电弧光谱信号
- PRODUCTION OF UNIFORM DROPLETS IN VIBRATING SPRAY GRANULATION PROCESSES 振动喷射造粒过程中均匀液滴的形成
- He looks very manly in his uniform. 他穿着制服十分精神。
- That morning they all had on their army uniform. 那天早上他们都穿上了军服。
- A major has a crown on the shoulder of his uniform. 一名少校在制服的肩部有个王冠形的纹章。
- How big is the equipment for spray steelmaking? 连续喷雾炼钢设备有多大?
- The general's uniform was trimmed with gold braid. 将官的制服饰有金色的穗带。
- Spray slaps the coast ceaselessly. 海浪不停地拍打着海岸。
- Everyone should wear clothes uniform with these. 大家都该穿着兴这些相同的衣服。
- Jack looks well in naval uniform. 杰克穿海军制服很漂亮。
- The rows of houses were uniform in appearance. 这一排排的房屋外表都是一样的。
- Soldiers wear a distinctive uniform. 士兵们穿着特制的制服。
- He is easily distinguished by his uniform. 凭他的那身制服,人们很容易认出他。