ball to powder weight ratio
ball-to-powder weight ratio
charcoal powder propelling ratio
high ratio of powder to gas
mass ratio of metallic powder to chromium trioxide
powder-penetration ratio
Ratio of lime powder content
ratio of powder and gas
the ratio of liquid to powder
the ratio of mineral powder to bitumen
weight ratio of ball and powder
anisotropic NdFeB powder(d-HDDR powder)
Composite powder elective melted powder