Complex sentence: Micro-pulling-down (µ-PD) method is a crystal growth technique based on continuous transport of the melted substance through micro-channel (s) made in a crucible bottom and its continuous solidification on liquid/solid interface positioned under the crucible.
Split into simpler sentences: Micro-pulling-down (µ-PD) method is a crystal growth technique based on continuous transport of the melted substance through micro-channel (s) made in a crucible bottom. Continuous solidification of the melt is progressed on liquid/solid interface positioned under the crucible.