数值计算与实验结果表明，金属射流在惰性气体环境下受激振破碎形成均匀金属液滴束流，收取到了均匀尺寸的金属锡球状粉末。
The results proved that the metal jet was broken up to form uniform droplet stream under periodic longitudinal vibration in inert gas, and the sphere uniform tin powders wa…
生物杀灭剂是小球状或粉末状和其它成分混合，并挤压成形。
Biocides as pellets or powder are mixed with other ingredients, compounded, and extruded into shapes.
球磨后粉末形状从原来的长条状转变为细小的球状；
Particle shape varies from long strip to fine globosity after milling.
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