Final answer:
HYDT stands for Hydraulic in mini excavators.
Step-by-step explanation:
When looking in Wynne at mini excavators, "HYDT" stands for Hydraulic. It refers to the hydraulic system in the mini excavators which is responsible for powering the various functions and movements of the machine. The hydraulic system uses fluid pressure to generate force and control the operation of the excavator's boom, arm, bucket, and other attachments.