| 摘要 |
<p>Appts. for the structure addn. of the constituents of a mixt. is based on a lever, the ratio between the length of the arms being related to the proportion of the material required in the mixt. The cycle of delivering the components of the mixt. in given proportions is regulated by variations in the state of balance of the liver as components are withdrawn from and replaced in the reservoirs which are integral with the lever. The appts. is partic. useful in the plastics industry for the controlled addn. of colouring material. The appts. is simple, light and small and this facilitates both its maintenance and its cleaning.</p> |
